Commercial Permanent Metal Air Filter is used for pre-filtering air in commercial and industrial air handlers with rigid, washable metal filters that stay in service for years instead of being thrown away. UL 900 is the reference cited for it on drawings, datasheets and purchase orders.
What UL 900 Means for Commercial Permanent Metal Air Filter
The dimensions in the table below are supplied to suit UL 900. Where the standard sets requirements for the finished appliance, device or system, compliance testing of that assembly stays with its manufacturer; we supply the metal mesh part to the drawing and can provide material certificates and dimensional reports with the shipment.
Commercial Permanent Metal Air Filter Dimensions
| Size | Width X (mm) | Height Y (mm) | Thickness (mm) | Media | Frame |
|---|---|---|---|---|---|
| 20 u00d7 20 u00d7 2 in | 508 | 508 | 50 | Aluminum layered expanded | Galvanized steel |
| 24 u00d7 24 u00d7 2 in | 610 | 610 | 50 | Aluminum layered expanded | Galvanized steel |
| 20 u00d7 25 u00d7 2 in | 508 | 635 | 50 | SS430 layered mesh | SS430 |
| 24 u00d7 24 u00d7 4 in | 610 | 610 | 100 | Galvanized expanded + knitted | Galvanized steel |
Specifying Commercial Permanent Metal Air Filter Beyond the Standard
- Size: Nominal 20 × 20, 24 × 24 or 20 × 25 in at 2 in or 4 in depth.
- Media: Layered aluminum for weight; SS430 or galvanized for heat and abrasion.
- Frame: Galvanized steel or stainless with handles for frequent removal.
When Commercial Permanent Metal Air Filter Is Not the Right Choice
Not a HEPA or MERV 13 filter; it protects equipment, not occupants.
