16x25x1 Reusable MERV 8 Pleated Air Filter

Product Overview

The R8G101625 is a 16x25x1 washable MERV 8 pleated air filter washable pleated air filter with a 24 gauge galvanized steel frame, engineered for long-term use in residential, commercial, and industrial HVAC systems where MERV 8 filtration efficiency, low airflow resistance, and the economics of a washable MERV 8 filter are required. Rated MERV 8 per ASHRAE Standard 52.2, this washable MERV 8 filter, a pleated air filter, captures dust, pollen, mold spores, pet dander, and lint particles in the 3–10 micron size range that standard fiberglass and lower-MERV disposable filters pass through, providing meaningful indoor air quality improvement for any environment desiring MERV 8 efficiency.

The R8G101625 is manufactured by American Metal Filter Company (AMFCO) using a precision-formed 24 gauge galvanized steel frame, 30 gauge galvanized steel face grids on both the air entry and exit sides, and a 3-ply polyester blend media pack with tackifier that provides the combination of mechanical filtration and depth loading required for MERV 8 efficiency. The filter’s permanent design is rated to last at least three times longer than standard capacity disposable MERV 8 filters, washing and reusing multiple times while maintaining MERV 8 post-washing. With actual dimensions of 15.5” H x 24.5” W x 7/8″ D (±1/8”), the R8G101625 installs in standard 16x25x1 nominal filter housings in residential furnaces, commercial air handlers, rooftop units (RTUs), air handling units (AHUs), and built-up filter banks throughout residential, commercial, and industrial HVAC systems.

Unlike disposable pleated filters discarded after a single service cycle, the R8G101625 is designed for repeated washing and reuse over an extended service life. The 3-ply polyester blend media with tackifier maintains MERV 8 efficiency after multiple wash cycles, providing consistent particulate capture performance throughout the filter’s operational lifetime without the media degradation that affects lower-quality washable alternatives. AMFCO’s tech sheet specifies “frequent and moderate” washability for the R8G Series, and the filter’s construction—galvanized steel frame with pop-riveted mitered corners and 30 gauge galvanized steel face grids—provides the structural integrity to withstand years of installation, removal, washing, and reinstallation in demanding commercial and institutional HVAC applications.

The R8G Series is popular across a uniquely broad range of applications: from home furnaces and school HVAC systems to commercial office buildings, data centers, and cryptocurrency mining facilities. AMFCO specifically highlights the R8G as an effective pre-filter in multiple-stage, high-efficiency HVAC systems like Rooftop Units and Air Handling Units, where its MERV 8 efficiency captures the particles most likely to load downstream higher-efficiency filter stages, extending downstream filter service life and reducing overall filter program costs. For building engineers, facilities managers, and HVAC contractors who need verified MERV 8 filtration in a permanent washable MERV 8 filter format — reusable rather than disposable, the R8G101625 delivers the efficiency of standard disposable MERV 8 filters with the long-term economics and reduced waste of a reusable washable MERV 8 filter design.

Commercial & Residential Applications

The R8G101625 16x25x1 reusable MERV 8 pleated air filter delivers reliable MERV 8 particulate filtration across a broad range of residential, commercial, institutional, and industrial HVAC applications. The R8G Series is explicitly cited by AMFCO for use in “Data Centers, crypto mining facilities requiring a MERV 8 washable air filter, as well as residential, commercial and industrial HVAC applications where MERV 8 efficiency is desired”—a uniquely broad application range that reflects the versatility of MERV 8 efficiency, low airflow resistance, and washable reusable construction.

Residential HVAC — Furnaces and Air Handlers

Home furnaces and residential air handler units are the most common application for MERV 8 filters, where the R8G101625 provides superior particulate capture compared to standard fiberglass or MERV 4 filters while maintaining the low pressure drop required for proper airflow in residential forced-air systems. Homeowners with pets, allergy sensitivities, or indoor air quality concerns benefit from the R8G101625’s MERV 8 capture of dust, pet dander, pollen, and mold spores, while the washable MERV 8 design eliminates the recurring cost of purchasing replacement filters four to six times per year. The 16x25x1 nominal size fits standard furnace washable MERV 8 filter positions throughout residential HVAC systems, and the pop-riveted galvanized steel frame withstands years of regular homeowner filter handling. AMFCO recommends keeping a spare R8G101625 on hand so one filter is always clean and ready to install while the other completes its wash and dry cycle.

Schools, Offices, and Commercial Buildings

Educational facilities, office buildings, retail spaces, and commercial buildings operate HVAC systems where MERV 8 filtration supports indoor air quality for occupants, reduces dust accumulation on surfaces and equipment, and protects HVAC coils and components from particulate fouling. AMFCO explicitly lists schools and offices as target applications for the R8G Series, providing MERV 8 efficiency in a washable format that supports commercial building filter maintenance programs where facilities staff perform periodic filter cleaning rather than disposal and replacement. In multi-floor commercial buildings with numerous filter positions, the R8G101625’s washable MERV 8 filter design substantially reduces annual filter procurement and disposal costs compared to disposable filter programs of equivalent MERV rating, while maintaining the MERV 8 efficiency required for commercial occupancy indoor air quality objectives.

Data Centers and Crypto Mining Facilities

data centers and cryptocurrency mining facilities — key applications for a data center MERV 8 washable filter subject HVAC systems to continuous, high-demand cooling loads where airborne particulate contamination can degrade compute hardware performance, cause component failures, and shorten hardware service life. AMFCO specifically identifies data centers and crypto mining facilities as primary target applications for the R8G Series, recognizing that these environments require consistent MERV 8 particulate protection combined with low airflow resistance and a washable MERV 8 filter design compatible with the high-velocity cooling airflow rates and frequent maintenance access cycles of compute-intensive facilities. The R8G101625’s galvanized steel frame and polyester media construction withstand the demanding operating environment of data center cooling systems where high air velocities, continuous operation, and frequent inspection cycles place structural demands on filter components that cardboard-framed disposable alternatives cannot reliably meet over extended service periods.

Rooftop Units and Air Handling Units

Rooftop units (RTUs) and air handling units (AHUs) in commercial and institutional buildings represent a high-value application for the R8G101625, where AMFCO specifically notes the R8G as making “a great prefilter in multiple-stage, high-efficiency HVAC systems like Roof Top Units (RTUs) and Air Handling Units (AHUs).” As a washable MERV 8 pre-filter positioned upstream of MERV 11, MERV 13, or HEPA stages, the R8G101625 captures the larger particle fractions most likely to load downstream higher-cost filter media, extending downstream filter service life and reducing overall filter system operating costs without sacrificing system filtration efficiency. For RTU and AHU applications with periodic preventive maintenance access, the R8G101625’s washable MERV 8 filter design supports filter programs that clean rather than replace filters during scheduled maintenance visits, reducing filter procurement lead time requirements and material costs for building operations teams.

Government Buildings and Institutional Facilities

Government buildings, libraries, courthouses, healthcare facilities, and other institutional buildings operate HVAC systems subject to procurement and sustainability requirements that favor long-life, reusable components over single-use disposable alternatives. The R8G101625’s washable design supports facility sustainability objectives by reducing filter waste and the frequency of procurement cycles, while MERV 8 efficiency meets the particulate filtration requirements of most commercial institutional occupancies. Facilities with government procurement programs benefit from AMFCO’s Made in USA manufacturing for the R8G Series, supporting domestic sourcing requirements applicable to government building maintenance material procurement.

Construction Features

The R8G101625 16x25x1 reusable MERV 8 pleated air filter represents precision construction engineered for years of reliable MERV 8 filtration performance across multiple wash cycles and decades of commercial and residential HVAC service. Every component is specified to deliver consistent MERV 8 particle capture, structural durability through repeated washing operations, and precise dimensional accuracy for proper housing fitment—from the 24 gauge galvanized steel frame to the 30 gauge face grids and 3-ply polyester blend media with tackifier.

24 Gauge Galvanized Steel Frame

The precision-formed 24 gauge galvanized steel perimeter frame provides the structural foundation for the R8G101625, delivering the rigidity required to maintain the critical 15.5” x 24.5” face dimensions within ±1/8” tolerance across years of installation, removal, and washing cycles. Precision-mitered corner joints secured with pop rivets create true 90-degree angles that maintain proper housing fitment in tight-clearance filter slots and commercial HVAC housings, preventing bypass around the filter perimeter that reduces filtration efficiency. The galvanized steel construction resists corrosion in typical HVAC operating environments, maintaining structural integrity through the repeated moisture exposure of washing cycles and the humidity conditions of commercial and residential HVAC systems throughout years of service. Drain holes in three corners of the frame facilitate water drainage during washing operations, ensuring the filter can be effectively cleaned and dried between service cycles. The frame’s sturdy construction is designed to enclose the media pack firmly and maintain the pleated media geometry under airflow pressure at rated velocity, supporting consistent MERV 8 efficiency throughout the operational life of the filter.

30 Gauge Galvanized Steel Face Grids

30 gauge galvanized steel face grids on both the air entry and exit sides of the R8G101625 provide uniform airflow distribution across the filter face while protecting the 3-ply polyester media pack from physical damage during installation, removal, and washing operations. The entry-side grid prevents contact damage to the pleated media during insertion into tight filter slots and housing applications, while the exit-side grid supports the media pack against airflow pressure at rated velocity, maintaining pleat geometry and media integrity throughout the filter’s operational life. The expanded metal grid pattern promotes consistent face velocity distribution across the full filter area, ensuring even particulate loading of the polyester media and maximizing MERV 8 capture efficiency across the entire filter face. Galvanized steel construction matches the frame material for consistent corrosion resistance and structural compatibility across the complete filter assembly.

3-Ply Polyester Blend Media with Tackifier

The 3-ply polyester blend media with tackifier is the filtration core of the R8G101625, providing MERV 8 efficiency through mechanical filtration and depth loading mechanisms that capture particles throughout the media depth. The polyester blend fiber structure provides the particle interception and inertial impaction mechanisms required for MERV 8-grade capture of dust, pollen, mold spores, pet dander, and lint in the 3–10 micron size range, while the tackifier treatment enhances particle adhesion to media fibers and contributes to maintaining MERV 8 performance consistency after multiple wash cycles. The 3-ply construction provides the media depth required for depth loading—particles penetrate into the media thickness and are captured throughout the depth rather than just on the surface—which extends service intervals before cleaning is required and produces a more gradual pressure drop increase over the filter’s service life compared to single-layer surface-loading media alternatives. The pleated configuration of the polyester media maximizes total filtration area within the 16x25x1 nominal filter footprint, providing increased particle capture area while maintaining the low pressure drop at 295 FPM rated airflow required for residential furnace and commercial HVAC system applications.

Maintenance & Cleaning

The R8G101625 16x25x1 reusable MERV 8 pleated air filter requires periodic washing to restore MERV 8 filtration efficiency and remove accumulated particulate from the 3-ply polyester media pack. The washing process follows AMFCO’s specified procedure for the R8G Series and is designed to maintain MERV 8 efficiency after multiple cleaning operations. The R8G Series is rated for “frequent and moderate” washability, designed to last at least 3x longer than standard capacity disposable MERV 8 filters through repeated service cycles. High-powered steam cleaning and chemical dips are unnecessary and not recommended per AMFCO manufacturer specifications.

Washing Procedure

Remove the R8G101625 from your HVAC system by sliding it out of the filter housing or releasing any retention mechanism. Note the pleat orientation so the filter can be reinstalled with pleats running vertically. Take the filter to a utility sink, hose bib, or outdoor washing area with access to warm running water at moderate pressure. Rinse the filter with a moderate-to-heavy stream of warm water in the direction OPPOSITE to airflow—this is the AMFCO-specified washing method for the R8G Series. Washing in the reverse-airflow direction carries captured particles out through the entry face rather than pushing them deeper into the media. Continue rinsing until the water runs completely clear. Allow the filter to drain and air dry completely before reinstalling—reinstalling a wet filter is not recommended as residual moisture can promote microbial growth in the media during extended shutdown periods. Do NOT use high-powered steam cleaning or chemical dips; these are unnecessary and not recommended per AMFCO manufacturer specifications.

Washing Frequency Guidelines

The R8G Series is rated for “frequent and moderate” washing. Washing frequency depends on your specific application, airborne particulate loading, and system operating hours. Residential HVAC systems in typical homes generally require filter cleaning every 1–3 months depending on factors including pets, occupancy, local air quality, and system operating hours. Commercial building applications with higher particulate loads may require monthly or more frequent washing. Data center and crypto mining applications should base washing frequency on observed pressure drop rise above initial clean-filter readings, as compute facility environments can load filters more rapidly than standard commercial applications. Visual inspection of the pleat face is the most reliable washing indicator—when visible loading appears on the pleat surfaces, washing is warranted. For systems with building automation pressure differential monitoring, rising differential pressure across the filter bank provides an objective washing trigger without requiring physical inspection of filter condition.

Best Practice: Two Filters Per Position

AMFCO specifically recommends purchasing two R8G filters per filter position to maintain application filtration efficiency during cleaning and change-out cycles. With two filters per position, one filter remains in service providing continuous MERV 8 filtration while the other is being washed and dried, eliminating any unfiltered operation period during filter removal and cleaning. For commercial buildings, data centers, and institutional facilities where continuous HVAC filtration is a requirement, the two-filter-per-position strategy with the R8G101625’s washable design provides a practical approach to maintaining uninterrupted MERV 8 filtration at significantly lower long-term cost than equivalent disposable filter programs.

Installation

Installing the R8G101625 16x25x1 reusable MERV 8 pleated air filter follows standard procedures for HVAC panel filter installation in housings accepting 16x25x1 nominal size filters, with one critical orientation requirement: pleats must run VERTICALLY in all R8G Series installations per the AMFCO installation specification.

Pre-Installation Checklist

Before installing the R8G101625, verify that your filter housing accepts 16x25x1 nominal size filters with actual interior dimensions accommodating the 15.5” H x 24.5” W x 7/8″ D filter, with ±1/8” tolerance on height and width. Confirm your HVAC system operating temperature does not exceed 200°F at the filter location. Identify the pleat orientation of the R8G101625 and confirm the housing configuration allows the pleats to run vertically during installation—this is mandatory per AMFCO’s R8G Series installation specification. For first-time installation, consider ordering a spare R8G101625 to maintain continuous filtration while the primary filter is being washed and dried. Clean the filter housing interior of accumulated dust and debris from previous filter service before installing the new filter.

Installation Steps

Shut down your HVAC system completely before accessing the filter compartment. Remove any existing filter from the housing. Clean the filter housing interior using a vacuum or damp cloth to remove accumulated dust. Orient the R8G101625 with the pleats running VERTICALLY—this is the required installation orientation for all R8G Series filters. Horizontal pleat orientation is specifically prohibited by the AMFCO installation specification; vertical pleat orientation ensures proper airflow through the pleated media, correct drainage of any moisture during washing, and maintenance of pleat geometry under gravity over the filter’s service life. Insert the filter into the housing maintaining the vertical-pleat orientation throughout the installation process. Press the filter firmly into place ensuring all four edges of the galvanized steel frame seat properly against the housing walls or tracks. In systems with filter retention clips, retaining frames, or access door compression mechanisms, secure the retention mechanism per your specific housing design. Close and secure the filter access door or panel. Restore power and restart the HVAC system. Record the installation date and filter orientation in your maintenance log.

Frequently Asked Questions (site:metalairfilters.com)

What is the MERV rating of the R8G101625?

The R8G101625 is rated MERV 8 per ASHRAE Standard 52.2. MERV 8 filters capture particles in the 3–10 micron size range including dust, pollen, mold spores, pet dander, and lint. MERV 8 is the commonly specified minimum efficiency for commercial HVAC washable MERV 8 filter applications and residential systems where improved indoor air quality is a maintenance priority beyond basic fiberglass filtration.

How does the R8G compare to a standard disposable MERV 8 filter?

The R8G Series is rated to last at least 3x longer than a standard capacity disposable MERV 8 filter. While a typical disposable MERV 8 filter is replaced every 1–3 months, the R8G101625 is washed, dried, and reinstalled for multiple service cycles, substantially reducing filter procurement cost and disposal waste over time. The R8G101625 maintains MERV 8 efficiency after multiple washing operations, providing equivalent filtration performance to disposable alternatives with the long-term economics and sustainability benefits of a permanent washable MERV 8 design.

How do I clean the R8G101625?

Remove the filter from your HVAC system, then rinse with a moderate-to-heavy stream of warm water in the direction OPPOSITE to airflow until the water runs completely clear. Do NOT use high-powered steam cleaning or chemical dips. Allow the filter to drain and air dry completely before reinstalling. Best practice per AMFCO is to keep a spare R8G101625 per filter position so one is always in service while the other is being cleaned and dried.

How many wash cycles does the R8G last?

The R8G Series is rated to last at least 3x longer than standard capacity disposable MERV 8 filters. Actual service life depends on application particulate loading, wash frequency, and handling care during installation and removal. The “frequent and moderate” washability rating confirms the R8G is designed for regular cleaning without concern for premature media degradation from routine washing operations performed per AMFCO specifications.

What are the actual dimensions of the R8G101625?

The R8G101625 has actual dimensions of 15.5” H x 24.5” W x 7/8″ D (±1/8” on H and W). The nominal size is 16x25x1. R8G Series filters use a 1/2” undercut on height and width: actual height = nominal H minus 1/2” and actual width = nominal W minus 1/2”. Nominal depth of 1” produces an actual depth of 7/8″.

Why must the pleats run vertically?

The AMFCO R8G Series installation specification requires pleats to run vertically in all installations. Vertical pleat orientation ensures proper drainage of any moisture that enters the filter during operation, maintains pleat geometry under gravity over extended service periods, and promotes consistent airflow distribution through the pleated media for even particulate loading and MERV 8 efficiency across the full filter face. Installing with horizontal pleats is a code violation of the AMFCO installation requirement and may compromise filter performance and service life.

What is the maximum operating temperature of the R8G101625?

The R8G101625 R8G Series galvanized steel model is rated for continuous operation at 200°F. This covers the majority of residential, commercial, and light industrial HVAC applications. For applications requiring higher temperature ratings, contact Metal Air Filters for information on alternative filter options.

Can the R8G be used as a pre-filter in multi-stage HVAC systems?

Yes—the R8G is explicitly noted by AMFCO as making “a great prefilter in multiple-stage, high-efficiency HVAC systems like Roof Top Units (RTUs) and Air Handling Units (AHUs).” As a MERV 8 pre-filter positioned upstream of MERV 11, MERV 13, or HEPA stages, the R8G101625 captures the particle fraction most likely to load downstream higher-efficiency filter media, extending downstream filter service life and reducing overall filter system operating costs. For maximum pre-filter effectiveness, consider pairing the R8G101625 with an economizer-grade pre-filter (HKG or HKA Series) immediately upstream to create a three-stage system that maximizes protection of downstream high-efficiency filters.

Is there an aluminum frame version of this filter?

The R8G Series uses a 24 gauge galvanized steel frame. Contact Metal Air Filters to inquire about aluminum frame MERV 8 filter options if aluminum frame construction is required for your specific application or if corrosion resistance beyond standard galvanized steel is needed for your HVAC environment.

Does this filter fit standard commercial HVAC housings?

Yes—the R8G101625 fits standard 16x25x1 nominal filter positions in residential furnaces, commercial AHUs, RTUs, side-access housings, and built-up filter banks. Actual dimensions of 15.5” H x 24.5” W x 7/8″ D provide the 1/2” clearance on height and width standard to nominal-size HVAC filter positions. Verify your housing accepts 16x25x1 nominal size filters and that the filter depth of 7/8″ is compatible with your filter track depth before ordering.

Is R8G suitable for data centers and crypto mining facilities?

Yes—AMFCO specifically highlights data centers and cryptocurrency mining facilities as primary target applications for the R8G Series. These environments benefit from the R8G’s combination of MERV 8 particulate protection for sensitive compute hardware, low airflow resistance compatible with high-velocity cooling airflow, washable MERV 8 filter design economics for high-maintenance-cycle operations, and galvanized steel frame structural durability for the frequent filter access typical of compute facility maintenance programs.