Description
The AMFCO 23-3/4×26-7/8×7/8” Exact Aluminum Foil Mesh Filter is a high-quality, durable, and washable impingement-type panel filter designed for a wide range of HVAC applications. Manufactured by American Metal Filter Company (AMFCO) in the USA, this filter provides reliable performance and extended service life.
Engineered with multiple layers of expanded aluminum foil mesh, this filter efficiently captures airborne particulate and coolant mist, protecting your HVAC equipment and improving air quality. Its robust construction ensures it can withstand demanding environments, making it an ideal choice for both residential and commercial systems.
Choosing an AMFCO aluminum foil mesh filter means investing in a reusable filtration solution that reduces waste and lowers long-term operating costs. Its precise dimensions guarantee a perfect fit, ensuring optimal filtration efficiency and preventing air bypass in your system.
What Is the 23-3/4×26-7/8×7/8” Exact Aluminum Foil Mesh Filter?
The 23-3/4×26-7/8×7/8” Exact Aluminum Foil Mesh Filter is a premium, washable air filter meticulously crafted by American Metal Filter Company (AMFCO). It functions as an impingement-type panel filter, utilizing multiple layers of expanded aluminum foil mesh to effectively trap airborne contaminants such as dust, lint, and coolant mist from the air stream. This design ensures particles are captured throughout the filter’s depth, rather than just on the surface, leading to higher dust holding capacity and consistent performance.
With an average dust arrestance of 43% at a rated airflow of 350 FPM and a dust holding capacity of 68 grams per square foot, this filter offers significant particulate removal for its class. Unlike disposable filters, its all-aluminum construction allows for repeated cleaning and reuse, providing a cost-effective and environmentally friendly filtration solution that maintains its integrity over time.
Key Benefits of the AMFCO Aluminum Foil Mesh Filter
- Exceptional Durability: Constructed entirely from aluminum, ensuring a long service life even in challenging environments.
- Washable & Reusable: Designed for repeated cleaning, significantly reducing replacement costs and environmental waste.
- Efficient Impingement Filtration: Progressive-density media captures particles throughout the filter depth for superior performance.
- Corrosion Resistant: All-aluminum frame and media provide excellent resistance to rust and corrosion.
- Precise Fit: Manufactured to exact dimensions (23.75” × 26.875” × 0.875”) to prevent air bypass and ensure optimal filtration.
- Made in USA Quality: Proudly manufactured by AMFCO, guaranteeing high standards of craftsmanship and reliability.
Technical Specifications for AMFCO Aluminum Foil Mesh Filters
This section details the precise technical specifications for the AMFCO 23-3/4×26-7/8×7/8” Exact Aluminum Foil Mesh Filter, ensuring optimal performance and compatibility with your HVAC system.
| Specification | Value |
|---|---|
| Filter Type | Impingement-type washable panel filter |
| MERV Rating | Not Applicable (metal filters typically not MERV rated) |
| Frame Material | .030” thick aluminum |
| Frame Construction | Mitered corners, secured with pop-rivet(s), drain holes |
| Media Material | Multiple layers of expanded aluminum foil mesh |
| Actual Depth | 7/8 inch (0.875”) |
| Ply Count | 5 |
| Face Grids | 24 gauge aluminum |
| Max Operating Temperature | 275°F (135°C) |
| Rated Airflow | 350 fpm (feet per minute) |
| Final Resistance | 0.50 inches W.G. (before cleaning) |
| Dust Arrestance | 43% average at rated airflow (350 FPM) |
| Dust Holding Capacity | 68 grams per square foot |
| Washability | Yes, fully washable and reusable |
| UL Classification | Not UL Classified |
| Country of Origin | USA |
Exact Dimensions for the AMFCO Aluminum Foil Mesh Filter
Understanding the precise dimensions is crucial for proper fit and performance within your HVAC system. This AMFCO filter is manufactured to exact specifications, ensuring a snug and effective seal that prevents air bypass. Always measure your existing filter or filter slot to confirm compatibility.
| Nominal Size (Approximate) | Actual Dimensions (Length × Width × Height) |
|---|---|
| 24” × 27” × 1” | 23.75” × 26.875” × 0.875” |
Note: The actual dimensions are slightly smaller than the nominal size to allow for easy insertion and removal from standard filter housings. This specific filter is sold by its exact measurements to ensure precision.
Versatile Applications for Aluminum Foil Mesh Filters
The AMFCO 23-3/4×26-7/8×7/8” Exact Aluminum Foil Mesh Filter is engineered for broad applicability across various residential, commercial, and industrial settings. Its robust construction and washable design make it suitable for environments where durability and reusability are paramount.
| Application | Why This Filter | Key Requirement |
|---|---|---|
| Commercial HVAC Systems | Durable, washable, and effective in high-airflow environments, reducing operational costs. | Longevity, reusability, efficient particulate removal. |
| Industrial Ventilation | Withstands harsh conditions, effectively removes coolant mist, oil mist, and airborne debris. | Robust construction, mist elimination, low pressure drop. |
| Outdoor Air Intake Ducts | Resists weather elements and prevents the entry of large debris, leaves, and insects. | Durability, weather resistance, pre-filtration. |
| Rooftop Economizer Hoods | Protects sensitive HVAC equipment from environmental contaminants and extends system life. | Robustness, debris capture, extended service life. |
| Electronic Air Cleaners (Pre-filter) | Captures larger particles upstream, extending the life and efficiency of downstream electrostatic filters. | Pre-filtration, washable, low resistance. |
| Central Air Conditioners | Maintains indoor air quality and protects cooling coils from dust buildup, improving system efficiency. | Efficient particle capture, washable, system protection. |
| Computer Environment Systems | Prevents dust accumulation on sensitive electronic components, ensuring reliable operation. | Fine particulate control, reusability, stable airflow. |
| Wall Heaters & Vent Fans | Improves air circulation and reduces dust in localized areas, offering basic yet effective filtration. | Compact design, easy maintenance, basic filtration. |
How This Aluminum Foil Mesh Filter Is Constructed
The AMFCO 23-3/4×26-7/8×7/8” Exact Aluminum Foil Mesh Filter is meticulously engineered for durability and effective filtration. Each component is selected and assembled to ensure long-lasting performance and reusability.
Durable Aluminum Frame
The filter’s robust frame is constructed from .030” thick aluminum, providing exceptional structural integrity and resistance to corrosion. The frame features mitered corners, which are securely fastened with pop-rivet(s) to prevent warping and maintain rigidity over time. Additionally, drain holes are strategically placed in three corners of the frame, facilitating efficient water drainage during the cleaning process and ensuring the filter dries thoroughly.
Progressive-Density Expanded Aluminum Foil Mesh Media
At the core of this filter is its advanced media pack, composed of multiple layers of aluminum foil. These layers are precisely slit and expanded to create a mesh with varying opening sizes. The design incorporates larger openings at the air entrance face and progressively smaller openings towards the air exit face. This progressive-density arrangement ensures that airborne contaminants are trapped throughout the entire 7/8-inch depth of the filter, rather than just on the surface. This deep-loading capability, combined with a 5-ply count, results in higher dust holding capacity and extended periods between cleanings.
Protective Aluminum Face Grids
To safeguard the delicate expanded aluminum foil mesh media, the filter is equipped with durable 24 gauge aluminum face grids on both sides. These grids provide essential protection against physical damage during handling, installation, and operation. They also help maintain the structural integrity of the media pack, preventing distortion and ensuring consistent airflow and filtration efficiency throughout the filter’s lifespan.
Installation Instructions for Your Metal Air Filter
Proper installation of your AMFCO 23-3/4×26-7/8×7/8” Exact Aluminum Foil Mesh Filter is crucial for optimal performance and system protection. Follow these steps to ensure a secure and effective fit.
Before Installing
- Inspect the new filter for any signs of shipping damage or manufacturing defects.
- Confirm that the filter’s actual dimensions (23.75” × 26.875” × 0.875”) precisely match the requirements of your filter slot or housing.
- Ensure the HVAC system is turned off at the thermostat and the main power switch before beginning installation.
Installation Steps
- Power Down: Turn off the power to your HVAC system at both the thermostat and the main electrical breaker for safety.
- Locate Filter Slot: Identify the filter slot or housing, typically found in the return air duct, furnace cabinet, or air handler.
- Remove Old Filter: Carefully slide out the old filter. Note its orientation for reference, though for this metal filter, direction is often not critical.
- Insert New Filter: Slide the new 23-3/4×26-7/8×7/8” Exact Aluminum Foil Mesh Filter into the slot. Ensure it fits snugly and completely fills the opening to prevent air bypass.
- Secure Access Panel: Close and secure any access panels or doors that were opened to reach the filter slot.
- Restore Power: Turn the power back on to your HVAC system at the main breaker and thermostat.
Notes by System Type
- Upflow Systems: The filter is typically installed in the return air duct or within the furnace cabinet, usually at the bottom.
- Downflow Systems: Filters are commonly located in the return air plenum, often above the furnace unit.
- Horizontal Systems: Ensure the filter is fully seated within its horizontal slot to prevent sagging or air leakage around the edges.
- Grille/Return-Air Installations: Confirm the filter fits flush within the designated grille frame, allowing the grille cover to close securely.
Cleaning and Maintenance for Washable Metal Air Filters
The AMFCO 23-3/4×26-7/8×7/8” Exact Aluminum Foil Mesh Filter is designed for repeated cleaning and reuse, offering significant cost savings and environmental benefits. Regular maintenance ensures optimal performance and extends the life of your HVAC system.
Washing Procedure
- Power Off System: Always turn off your HVAC system at the thermostat and main power switch before removing the filter.
- Remove Filter: Carefully slide the filter out of its housing.
- Rinse Thoroughly: Using a garden hose or a strong stream from a sink sprayer, rinse the filter with water. For best results, rinse against the direction of normal airflow to dislodge trapped particles.
- Apply Detergent (If Needed): For heavily soiled filters, apply a mild household detergent or degreaser. Allow it to soak for a few minutes, then rinse thoroughly until all soap residue is gone.
- Shake Off Excess Water: Gently shake the filter to remove excess water.
- Air Dry Completely: Place the filter in a well-ventilated area to air dry completely before reinstallation. Do NOT reinstall a wet filter.
What NOT To Do
- Do NOT use harsh chemicals or abrasive cleaners: These can damage the aluminum media and frame.
- Do NOT bend or distort the filter frame or media: This can compromise the filter’s integrity and fit.
- Do NOT reinstall while wet: A wet filter can promote mold growth and reduce airflow.
- Do NOT use high-pressure washers directly on media: Excessive pressure can damage the expanded foil mesh.
- Do NOT attempt to dry with heat: Allow natural air drying to prevent warping or damage.
Cleaning Frequency Guide
- Residential Use: Typically every 1-3 months, depending on factors like pet ownership, local air quality, and system usage.
- Commercial Use: Monthly, or as indicated by system monitoring and the specific operational environment.
- Industrial Use: Bi-weekly to monthly, or more frequently in high-mist, high-dust, or heavy particulate environments.
Frequently Asked Questions
What is an Aluminum Foil Mesh Filter?
An Aluminum Foil Mesh Filter, such as the AMFCO 23-3/4×26-7/8×7/8” Exact, is an impingement-type, washable air filter constructed with multiple layers of expanded aluminum foil mesh within a durable aluminum frame. It’s designed to capture airborne particulates and coolant mist in HVAC systems through a progressive-density media pack.
What is the difference between actual and nominal dimensions?
Nominal dimensions are rounded approximations often used for general reference (e.g., 24” x 27” x 1”). Actual dimensions are the precise measurements of the filter (23.75” × 26.875” × 0.875”). This AMFCO filter is sold by its exact dimensions to ensure a perfect, snug fit and prevent air bypass in your system.
Does this filter have a specific installation direction?
For most metal impingement filters like this AMFCO model, the installation direction is not critical. The progressive density media is designed to work effectively regardless of orientation. The most important aspect is to ensure the filter is fully seated and fits snugly within its housing to prevent air from bypassing the filtration media.
How do I clean this washable metal filter?
To clean, first turn off your HVAC system. Remove the filter and rinse it thoroughly with water, preferably against the direction of normal airflow, using a garden hose or sink sprayer. For heavy grime, a mild detergent can be applied and then rinsed completely. Always allow the filter to air dry completely before reinstallation.
How often should I clean my Aluminum Foil Mesh Filter?
Cleaning frequency varies by application and environment. For residential use, cleaning every 1-3 months is typically sufficient. Commercial systems often require monthly cleaning, while industrial environments with higher particulate or mist loads may necessitate bi-weekly or monthly cleaning to maintain optimal performance.
What is the maximum operating temperature for this filter?
This AMFCO Aluminum Foil Mesh Filter is engineered to withstand and operate effectively in temperatures up to 275°F (135°C). This high-temperature resistance makes it suitable for a wide range of HVAC and industrial applications where heat may be a factor.
What are the best applications for this type of filter?
This filter excels in applications requiring durability, washability, and effective particulate/mist removal. Ideal uses include commercial HVAC systems, industrial ventilation, outdoor air intakes, rooftop economizers, as a pre-filter for electronic air cleaners, and in computer environment systems.
Whether a custom size is available?
Yes, American Metal Filter Company (AMFCO) specializes in manufacturing high-quality metal air filters and offers custom sizing for many of its products. If your system requires dimensions other than the standard 23.75” × 26.875” × 0.875”, please contact us directly with your specific requirements for a tailored solution.


