Description
The 22″×48″×1″ Washable 304 Stainless Steel Mesh Filter from American Metal Filter Company (AMFCO) is an industrial-grade impingement panel filter engineered for demanding HVAC applications. Manufactured in the USA, this durable filter provides superior performance in environments requiring robust filtration and high-temperature resistance.
Constructed entirely from 304 stainless steel, including the frame and multi-layered media, this filter is designed for repeated washing and long-term service. It effectively removes large airborne particulate and coolant mist, making it an ideal choice for commercial, industrial, and specialized residential systems.
With its exceptional strength, corrosion resistance, and UL Classified 900 rating, the AMFCO HI Series filter offers a sustainable and cost-effective solution for maintaining air quality and protecting HVAC equipment in critical applications.
What Is the 22″×48″×1″ Washable Stainless Steel Mesh Filter?
The 22″×48″×1″ Washable 304 Stainless Steel Mesh Filter is a heavy-duty, industrial-grade impingement-type panel filter designed for rigorous air filtration tasks. Manufactured by American Metal Filter Company (AMFCO), this filter utilizes multiple layers of corrugated stainless steel screen wire to capture airborne contaminants through direct impact and interception, rather than fine particulate straining.
Operating at a rated airflow of 350 FPM, this filter achieves an average dust arrestance of 43%, making it highly effective as a pre-filter for larger particulate and mist removal. Its robust 304 stainless steel construction ensures exceptional durability, corrosion resistance, and the ability to withstand temperatures up to 900°F, far exceeding the capabilities of standard disposable filters.
Key Benefits of the AMFCO HI Series Stainless Steel Filter
- Exceptional Durability: Constructed from 304 stainless steel for long service life and resistance to harsh conditions.
- Washable & Reusable: Designed for repeated cleaning, significantly reducing waste and replacement costs compared to disposable filters.
- High-Temperature Resistance: UL Classified 900 rating allows operation in environments up to 900°F, suitable for specialized industrial applications.
- Corrosion Resistant: 304 stainless steel provides excellent resistance to rust and chemical exposure.
- Low Airflow Resistance: Engineered to provide effective filtration with minimal pressure drop (0.50 inches W.G. final resistance), preserving system efficiency.
- Made in USA: Manufactured by American Metal Filter Company, ensuring quality and reliability.
Technical Specifications
Below are the detailed technical specifications for the AMFCO 22″×48″×1″ Washable 304 Stainless Steel Mesh Filter, ensuring clarity on its performance and construction.
| Specification | Value |
|---|---|
| Filter Type | Impingement-type washable panel filter |
| Frame Material | 24 gauge 304 stainless steel |
| Frame Construction | Mitered corners, secured with pop-rivet(s), drain holes in three corners |
| Media Material | 304 stainless steel screen wire |
| Media Configuration | Multiple layers of corrugated screen wire assembled in criss-cross fashion (5-ply) |
| Actual Depth | 7/8 inch (0.88 inches) |
| Max Operating Temperature | 900°F |
| Rated Airflow | 350 fpm |
| Dust Arrestance | 43% average at rated airflow (350 FPM) |
| Final Resistance | 0.50 inches W.G. before cleaning |
| Washability | Fully washable and reusable |
| UL Classification | UL Classified 900 |
| Country of Origin | USA |
| GTIN (UPC) | 00840373524341 (840373524341) |
Size Reference for 22″×48″×1″ Stainless Steel Filter
Understanding the precise dimensions of your filter is crucial for proper fit and performance. While filters are often referred to by their nominal size, the actual dimensions are slightly smaller to ensure they fit correctly into standard filter racks and channels. The 1-inch nominal depth filter has an actual depth of 7/8 inch.
| Nominal Size | Actual Dimensions (Length × Width × Height) |
|---|---|
| 22″×48″×1″ | 21 1/2″×47 1/2″×7/8″ (21.5″×47.5″×0.88″) |
Industrial & Commercial Filter Applications
The AMFCO HI Series 22″×48″×1″ Washable 304 Stainless Steel Mesh Filter is engineered for a wide range of demanding applications where durability, high-temperature resistance, and reusability are paramount. Its robust construction makes it suitable for environments that would quickly degrade standard disposable filters.
| Application | Why This Filter | Key Requirement |
|---|---|---|
| Commercial HVAC Systems | Provides durable pre-filtration for large particulate, extending the life of downstream filters. | Reliable pre-filtration, reduced maintenance. |
| Industrial Ventilation | Withstands harsh industrial environments, including high temperatures and corrosive elements. | Durability, high-temperature resistance (up to 900°F). |
| Outside Air Intake Ducts | Resists weather, corrosion, and captures larger debris before it enters the system. | Weather resistance, robust construction. |
| Rooftop Economizer Hoods | Ideal for exposed outdoor installations due to stainless steel’s corrosion resistance and strength. | Corrosion resistance, structural integrity. |
| Coolant Mist Collection | Effectively captures oil and coolant mist in machining and manufacturing facilities. | Mist separation, washable for oil removal. |
| OEM Replacement | Meets or exceeds specifications for original equipment in various industrial machinery. | Exact fit, high-performance material. |
| High-Temperature Processes | Suitable for ovens, furnaces, or exhaust systems where air temperatures can reach up to 900°F. | Extreme heat tolerance. |
How This 304 Stainless Steel Filter Is Constructed
The AMFCO HI Series 22″×48″×1″ Washable 304 Stainless Steel Mesh Filter is meticulously engineered for maximum strength, durability, and filtration efficiency. Its construction focuses on robust materials and assembly techniques to ensure long-term performance in challenging environments.
Frame Construction
The filter frame is fabricated from heavy-duty 24 gauge 304 stainless steel, providing exceptional rigidity and corrosion resistance. The corners are mitered for a precise fit and secured with pop-rivet(s), enhancing the structural integrity of the filter. Strategically placed drain holes in three corners facilitate efficient water drainage during the cleaning process, preventing water retention and promoting faster drying.
Media Pack Design
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 criss-cross fashion. This configuration not only creates a tortuous path for airborne particles, enhancing impingement filtration, but also significantly contributes to the overall strength and rigidity of the filter. The 5-ply media pack is firmly enclosed between two layers of expanded metal, which are then securely fitted within the stainless steel frame. This design ensures the media remains stable and effective even under high airflow and repeated cleaning cycles.
Installation Instructions for Washable Metal Air Filters
Proper installation of your AMFCO 22″×48″×1″ Washable 304 Stainless Steel Mesh Filter is essential for optimal performance and system protection. Follow these guidelines to ensure a secure and effective setup.
Before Installing
- Inspect Filter: Ensure the filter is clean, dry, and free from any damage before installation.
- Check Airflow Direction: Note the airflow direction arrow (if present) on your existing filter or system. While metal mesh filters are often bidirectional, maintaining consistent orientation can be beneficial.
- System Power Off: Always turn off your HVAC system or ventilation unit at the thermostat and main power switch before handling filters.
- Wear Gloves: While stainless steel is smooth, wearing gloves can protect your hands from any sharp edges and keep the filter clean.
Installation Steps
- Locate Filter Slot: Identify the filter slot or housing in your HVAC unit, air handler, or return air grille.
- Remove Old Filter: Carefully slide out the old filter. Note its orientation and any dust accumulation patterns.
- Clean Housing (Optional): If the filter housing is dirty, wipe it clean to prevent debris from being drawn into the system.
- Insert New Filter: Slide the new AMFCO 22″×48″×1″ Stainless Steel Mesh Filter into the slot. Ensure it fits snugly without forcing it. The filter should sit flush within the housing.
- Verify Fit: Double-check that the filter is fully seated and there are no gaps around the edges that could allow air to bypass the filter.
- Secure Access Panel: Close and secure any access panels or grilles that were opened during the filter change.
- Restore Power: Turn the main power switch back on, then set your thermostat to the desired operating mode.
Notes by System Type
- Upflow Systems: Filter typically slides into a slot at the bottom of the furnace/air handler.
- Downflow Systems: Filter usually located at the top of the furnace/air handler.
- Horizontal Systems: Filter often slides into a side-mounted slot.
- Grille/Return-Air Installations: Ensure the filter is securely held by clips or latches within the grille frame.
Cleaning and Maintenance for Washable Stainless Steel Filters
The AMFCO 22″×48″×1″ Washable 304 Stainless Steel Mesh Filter is designed for easy and effective cleaning, allowing for repeated use and significant cost savings. Regular maintenance ensures optimal airflow and filtration performance.
Washing Procedure
- Remove Filter: Turn off your HVAC system and carefully remove the dirty filter from its housing.
- Pre-Rinse: Rinse the filter with a moderate-to-heavy stream of water (e.g., garden hose, utility sink sprayer) to dislodge loose dirt and debris. Rinse against the direction of airflow for best results.
- Apply Cleaner (Optional): For stubborn grease or heavy particulate, apply a mild detergent or a specialized metal filter cleaning solution. Allow it to soak for a few minutes as per product instructions.
- Scrub (If Needed): Use a soft brush to gently scrub away any remaining embedded dirt. Avoid abrasive pads that could damage the media.
- Thorough Rinse: Rinse the filter thoroughly with clean water until all soap residue and dirt are removed. Ensure water flows freely through the media.
- Drain & Dry: Shake off excess water. Stand the filter on its edge or hang it to allow for complete air drying. The drain holes in the frame will assist in water removal. Ensure the filter is completely dry before reinstallation to prevent mold or mildew growth.
What NOT To Do During Cleaning
- Do NOT use harsh acids or strong caustic cleaners that can corrode stainless steel.
- Do NOT use high-pressure washers directly on the media, as this can deform the mesh.
- Do NOT bend or distort the filter frame or media during cleaning or handling.
- Do NOT reinstall a wet filter into your HVAC system.
Cleaning Frequency Guide
- Residential Use: Typically every 3–6 months, depending on household activity and pet ownership.
- Commercial Use: Every 1–3 months, depending on occupancy, foot traffic, and specific business operations.
- Industrial Use: Monthly or even bi-weekly in heavy dust, mist, or high-particulate environments. Monitor pressure drop for optimal timing.
Frequently Asked Questions
What is an AMFCO HI Series Stainless Steel Mesh Filter?
The AMFCO HI Series Stainless Steel Mesh Filter is a durable, washable impingement-type panel filter made from 304 stainless steel. It is designed for industrial and commercial HVAC applications to remove large airborne particulate and coolant mist, offering high-temperature resistance and reusability.
What is the difference between nominal and actual dimensions for this filter?
The nominal dimension (e.g., 22″×48″×1″) is a rounded size for easy identification. The actual dimension (21 1/2″×47 1/2″×7/8″) is the precise measurement, which is slightly smaller to ensure the filter fits correctly into standard filter housings and racks without binding.
Does the installation direction or orientation matter for this filter?
While many metal mesh filters are considered bidirectional due to their construction, it is generally recommended to install the filter with the same orientation as the previous filter or as indicated by any airflow arrows on your HVAC system. This ensures consistent performance and proper seating.
What is the recommended cleaning method for this washable filter?
The recommended cleaning method involves rinsing the filter with a moderate-to-heavy stream of water. For heavier soil, a mild detergent or specialized metal filter cleaner can be used, followed by a thorough rinse and complete air drying before reinstallation.
How often should I clean my 304 stainless steel mesh filter?
Cleaning frequency depends on the application and environment. For commercial use, every 1-3 months is typical, while industrial settings with high particulate or mist may require monthly or bi-weekly cleaning. Residential use might be every 3-6 months. Monitor the filter’s appearance and system airflow for best results.
What is the maximum operating temperature for this stainless steel filter?
This AMFCO HI Series filter is UL Classified 900, meaning it can safely operate in environments with air temperatures up to 900°F (approximately 482°C), making it suitable for specialized high-temperature industrial applications.
What are the best applications or use cases for this type of filter?
This filter excels in commercial HVAC systems, industrial ventilation, outside air intake ducts, rooftop economizer hoods, and applications involving coolant mist collection or high-temperature processes. Its durability and washability make it ideal for demanding environments.
Is it possible to get this filter in a custom size?
Yes, American Metal Filter Company (AMFCO) specializes in custom filter manufacturing. If you require a size other than the standard 22″×48″×1″, please contact us with your specific dimensions and requirements for a custom quote.
