Description
The 22×48×3-3/4” Exact Washable 304 Stainless Steel Screen Air Filter from American Metal Filter Company (AMFCO) is an industrial-grade impingement panel filter engineered for demanding HVAC applications. This HI Series filter is constructed entirely from durable 304 stainless steel, offering exceptional longevity and resistance to corrosion and high temperatures up to 900°F.
Designed as a robust, washable alternative to disposable filters, this AMFCO filter provides consistent performance with low airflow resistance. Its precise 22×48×3-3/4” dimensions ensure an exact fit in a wide range of residential, commercial, and industrial systems, making it an ideal choice for environments requiring a durable, reusable filtration solution.
Proudly made in the USA, this AMFCO stainless steel air filter represents a commitment to quality and sustainable filtration. It effectively captures large airborne particulate and coolant mist, contributing to cleaner air streams and reduced maintenance costs over its extended lifespan.
What Is the AMFCO 304 Stainless Steel Screen Air Filter?
The AMFCO 22×48×3-3/4” Exact Washable 304 Stainless Steel Screen Air Filter is an industrial-grade impingement-type panel filter engineered for superior durability and reusability in demanding HVAC environments. This HI Series filter operates by an impingement principle, where airborne particles collide with and adhere to the multiple layers of stainless steel screen wire media. It is specifically designed to effectively capture large airborne particulate matter and coolant mist from the air stream, protecting HVAC equipment and improving indoor air quality.
Unlike conventional disposable filters, this AMFCO filter is constructed from robust 304 stainless steel, allowing it to withstand harsh conditions, high temperatures up to 900°F, and repeated washing. Its design ensures low resistance to airflow (rated at 350 fpm with a final resistance of 0.50 inches W.G. before cleaning), maintaining system efficiency while providing long-term filtration performance. The washable nature significantly reduces waste and replacement costs, offering a sustainable and economical filtration solution.
Key Benefits of the AMFCO 304 Stainless Steel Screen Air Filter
- Exceptional Durability: Constructed from 304 stainless steel for superior strength, corrosion resistance, and a long service life.
- Washable & Reusable: Easily cleaned with water, eliminating the need for frequent replacements and reducing operational costs and waste.
- High-Temperature Resistance: Capable of operating in environments up to 900°F, suitable for specialized industrial applications.
- Low Airflow Resistance: Engineered to maintain optimal airflow (350 fpm rated) and system efficiency with a final resistance of 0.50 inches W.G.
- Precise Fit: Exact 22×48×3-3/4” dimensions ensure compatibility and secure installation in standard filter housings.
- Made in USA Quality: Manufactured by American Metal Filter Company (AMFCO) to stringent quality standards.
Technical Specifications for AMFCO HI Series Stainless Steel Filters
The following table details the authoritative technical specifications for the AMFCO HI Series 22×48×3-3/4” Exact Washable 304 Stainless Steel Screen Air Filter, ensuring clarity on its construction, performance, and operational parameters.
| Specification | Value |
|---|---|
| Filter Type | Impingement-type washable panel filter |
| Frame Material | 24 gauge stainless steel |
| Frame Construction | Mitered corners, secured with pop-rivet(s), drain holes in three corners |
| Media Material | 304 stainless steel screen wire — Multiple layers of corrugated screen wire assembled in criss-cross fashion (9 ply) |
| Actual Depth | 3-3/4 inches |
| Nominal Size | 22×48×4 inches |
| Face Dimensions | 22 inches (Length) × 48 inches (Width) |
| Max Operating Temperature | 900°F |
| Rated Airflow | 350 fpm |
| Final Resistance (before cleaning) | 0.50 inches W.G. |
| Dust Arrestance | Not specified in technical sheet |
| Washability | Fully washable and reusable |
| UL Classification | UL Classified 900 |
| Country of Origin | Made in USA |
| GTIN (UPC) | 00840373524358 |
Size Reference for 22×48×3-3/4” AMFCO Stainless Steel Filter
Understanding the precise dimensions of your air filter is crucial for proper fit and optimal performance. While many filters are referred to by their nominal size, it is the actual dimensions that ensure a correct fit within your HVAC system. This AMFCO HI Series filter is designed with exact dimensions to prevent air bypass and maximize filtration efficiency.
| Nominal Size | Actual Dimensions (Length × Width × Depth) |
|---|---|
| 22×48×4 inches | 22 inches × 48 inches × 3-3/4 inches |
The “nominal” size (e.g., 4 inches) is a rounded figure often used for general classification, whereas the “actual” size (3-3/4 inches) represents the precise measurement of the filter’s depth. Always verify the actual dimensions required by your system to ensure a perfect fit for this 22×48×3-3/4” filter.
Industrial & Commercial Applications for Stainless Steel Air Filters
The AMFCO 22×48×3-3/4” Exact Washable 304 Stainless Steel Screen Air Filter is engineered for versatility and durability across a broad spectrum of demanding applications. Its robust construction and high-temperature resistance make it an ideal choice for environments where standard disposable filters would fail or require frequent replacement.
| Application | Why This Filter | Key Requirement |
|---|---|---|
| Commercial HVAC Systems | Provides durable pre-filtration for large commercial buildings, reducing particulate load on downstream filters and extending system life. | Washability, low airflow resistance, long service life. |
| Industrial Ventilation | Effectively captures large airborne particulate and coolant mist in manufacturing plants, workshops, and processing facilities. | High durability, resistance to harsh industrial environments, reusability. |
| Outside Air Intake Ducts | Protects HVAC systems from larger debris, insects, and environmental particulate entering from outdoor air streams. | Weather resistance, robust construction, easy cleaning. |
| Rooftop Economizer Hoods | Ideal for pre-filtering air entering economizer sections, especially in areas exposed to varying weather conditions and debris. | Corrosion resistance (304 SS), high temperature tolerance, structural integrity. |
| Air Handling Units (AHUs) | Serves as a primary or pre-filter in AHUs, protecting coils and other components from large contaminants. | Consistent performance, low pressure drop, ease of maintenance. |
| OEM Replacement | Suitable for replacing existing metal or disposable filters in original equipment where a durable, washable solution is desired. | Exact dimensions, high-quality construction, compatibility with existing systems. |
| High-Temperature Environments | Can withstand operating temperatures up to 900°F, making it suitable for specialized industrial processes or exhaust systems. | Extreme heat resistance, non-combustible materials. |
How the AMFCO 304 Stainless Steel Air Filter Is Constructed
The AMFCO HI Series 22×48×3-3/4” Exact Washable 304 Stainless Steel Screen Air Filter is meticulously engineered for industrial-grade performance and longevity. Its robust construction ensures maximum durability and consistent filtration efficiency in demanding applications.
Frame Construction
The filter frame is precision-fabricated from durable 24 gauge stainless steel, providing exceptional structural integrity and corrosion resistance. The frame features mitered corners, which are securely fastened with pop-rivet(s) to ensure a rigid and long-lasting assembly. This design prevents warping and maintains the filter’s precise dimensions over its lifespan. Additionally, drain holes are strategically placed in three corners of the frame, facilitating efficient water drainage during the cleaning process and preventing water accumulation.
Media Pack Assembly
At the core of the HI Series filter is its advanced media pack, composed entirely of 304 stainless steel screen wire. This media consists of multiple layers of corrugated screen wire, assembled in a unique criss-cross fashion. This configuration not only enhances the filter’s strength and rigidity but also creates an intricate impingement surface for effective capture of airborne particulate. With a 9-ply count, the media pack offers substantial depth for particle retention while maintaining low airflow resistance. The entire media pack is firmly enclosed between two layers of expanded metal, which provides additional support and protection, ensuring the media remains stable and effective even under high airflow conditions.
Installation Instructions for AMFCO Stainless Steel Air Filters
Proper installation of your AMFCO 22×48×3-3/4” Exact Washable 304 Stainless Steel Screen Air Filter is essential to ensure optimal performance, maximum system protection, and efficient airflow. Follow these guidelines for a secure and effective setup.
Before Installing
- Verify Dimensions: Confirm that the actual filter dimensions (22×48×3-3/4”) match the requirements of your filter housing or slot.
- Inspect Filter: Check the new filter for any shipping damage or manufacturing defects before installation.
- System Power Off: Always turn off your HVAC system’s power at the thermostat and circuit breaker before opening any access panels.
- Note Airflow Direction: Identify the airflow direction in your system. Most systems have an arrow indicating airflow on the existing filter or housing.
- Clean Housing: Remove any dust or debris from the filter housing or slot before inserting the new filter.
Installation Steps
- Locate Filter Slot: Identify the filter access panel or slot in your furnace, air handler, or return air grille.
- Remove Old Filter: Carefully slide out the old filter. Note its orientation and airflow direction for reference.
- Orient New Filter: Position the AMFCO stainless steel filter so that the airflow arrow (if present on the housing or system) aligns with the intended direction of air movement. While metal filters typically do not have an arrow, ensure the filter is seated correctly.
- Insert Filter: Gently slide the new 22×48×3-3/4” filter into the housing or slot. Ensure it fits snugly without forcing it, and that there are no gaps around the edges.
- Secure Access Panel: Close and secure the filter access panel or grille.
- Restore Power: Turn the power back on to your HVAC system.
Notes by System Type
- Upflow Systems: Filter is typically installed in a horizontal slot at the bottom of the furnace or air handler, with air flowing upwards.
- Downflow Systems: Filter is usually installed in a horizontal slot at the top of the furnace or air handler, with air flowing downwards.
- Horizontal Systems: Filter is installed vertically in a slot on the side of the furnace or air handler, with air flowing horizontally.
- Grille/Return-Air Installations: The filter is placed directly behind a return air grille. Ensure the grille is securely fastened after filter insertion.
Cleaning and Maintenance for AMFCO Washable Stainless Steel Air Filters
The AMFCO 22×48×3-3/4” Exact Washable 304 Stainless Steel Screen Air Filter is designed for easy cleaning and long-term reusability, significantly reducing the need for replacements. Regular maintenance ensures optimal filtration performance and extends the life of your HVAC system.
Washing Procedure
- Remove Filter: Turn off your HVAC system’s power and carefully remove the dirty filter from its housing.
- Rinse with Water: Using a moderate-to-heavy stream of warm water, rinse the filter thoroughly. Start by rinsing against the direction of airflow to dislodge larger particles, then rinse with the direction of airflow to flush out remaining debris.
- Optional Cleaning Solution: For heavily soiled filters, a mild detergent or degreaser can be applied. 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. The drain holes in the frame will assist in this process.
- Air Dry Completely: Allow the filter to air dry completely before reinstallation. Placing it in a well-ventilated area will speed up drying. Do not use heat to dry the filter.
- Reinstall: Once completely dry, reinstall the filter into your HVAC system, ensuring correct orientation.
What NOT To Do During Cleaning
- Do NOT use high-powered steam cleaning: This can potentially damage the media pack.
- Do NOT use harsh chemical dips: Strong chemicals can degrade the stainless steel over time or leave residues that affect air quality.
- Do NOT bend or distort the frame: Handle the filter carefully to maintain its structural integrity and precise dimensions.
- Do NOT reinstall while wet: A wet filter can promote mold or mildew growth in your HVAC system.
- Do NOT use abrasive brushes: These can scratch or damage the stainless steel screen wire media.
Cleaning Frequency Guide
- Residential Use: Typically every 1–3 months, depending on household activity, pets, and local air quality.
- Commercial Use: Every 2–4 weeks, or as indicated by system monitoring, due to higher occupancy and operational hours.
- Industrial Use: Weekly or bi-weekly, especially in environments with high particulate loads, coolant mist, or heavy industrial processes.
Frequently Asked Questions
What is an AMFCO Stainless Steel Air Filter?
An AMFCO Stainless Steel Air Filter, specifically the 22×48×3-3/4” HI Series, is an industrial-grade impingement-type panel filter constructed from durable 304 stainless steel. It is designed to capture large airborne particulate and coolant mist in HVAC systems, offering a washable, reusable, and high-temperature resistant alternative to disposable filters.
What is the difference between nominal and actual filter dimensions?
Nominal dimensions are rounded figures used for general classification (e.g., 22×48×4 inches). Actual dimensions, such as 22×48×3-3/4 inches for this filter, are the precise measurements required for a proper fit in your filter housing. Always use actual dimensions when purchasing to ensure compatibility.
Does the AMFCO stainless steel filter have an airflow direction arrow?
AMFCO metal filters typically do not feature an airflow direction arrow on the filter itself. For proper installation, refer to the airflow direction indicated on your HVAC system’s filter housing or the existing filter you are replacing. Ensure the filter is seated snugly to prevent air bypass.
What is the recommended cleaning method for this washable filter?
To clean, rinse the filter with a moderate-to-heavy stream of warm water, preferably against the direction of airflow first, then with it. For stubborn grime, a mild detergent can be used, followed by a thorough rinse. Always allow the filter to air dry completely before reinstallation.
How often should I clean my AMFCO stainless steel air filter?
Cleaning frequency varies by application. For residential use, every 1–3 months is typical. Commercial settings may require cleaning every 2–4 weeks, while industrial environments with high particulate loads might need weekly or bi-weekly cleaning. Regular inspection will help determine the optimal schedule.
What is the maximum operating temperature for this filter?
The AMFCO 22×48×3-3/4” Exact Washable 304 Stainless Steel Screen Air Filter is UL Classified 900 and can withstand continuous operating temperatures up to 900°F. This makes it suitable for specialized applications where high heat resistance is critical.
What are the best applications for this type of filter?
This filter is ideal for commercial HVAC systems, industrial ventilation, outside air intake ducts, rooftop economizer hoods, and air handling units. Its durability and washability make it perfect for environments requiring robust pre-filtration against large particulates and coolant mist, especially where high temperatures or corrosive conditions are present.
Are custom sizes available for AMFCO stainless steel filters?
While this product is a standard 22×48×3-3/4” size, American Metal Filter Company (AMFCO) does offer a wide range of custom sizes for their metal air filters. Please contact us directly with your specific dimension requirements for custom order inquiries.
