Parker P312 disposable synthetic polyester panel filters are used in residential, commercial and light industrial HVAC systems, including prefilter applications where large quantities of lint and dust are present. Bonded polyester fibers form an interlocking pattern of lint and dust traps. This construction promotes dust loading while limiting resistance to airflow and surface loading.
Standard P312 construction uses a one-piece, heavy-duty kraft-board pinch frame. The frame is sealed to the polyester media with polyethylene adhesive under heat and pressure, forming a continuous bond around the perimeter. For custom or low-volume sizes, staples may be used as an alternative to seal the frame perimeter.
- Media: 100% polyester fibers.
- Classified per UL Standard 900 for flammability.
- Maximum operating temperature: 200 F (93 C).
- For 1- and 2-inch configurations: MERV <5; ASHRAE 52.2-2017 reference testing at 295 FPM on a 24 x 24-inch face size; initial resistance 0.07 in. W.G.
- Recommended final resistance: 0.50 in. W.G. for 1-inch depth; 1.00 in. W.G. for 2-inch depth.
Nominal Depths
1", 2"
Rated Face Velocity
300 FPM
Initial Resistance
0.14" W.G.
Recommended Final Resistance
1" - 0.50" W.G.
2" - 1.00" W.G.
Average Arrestance
1" - 75–80%
2" - 80–85%
Media Type
Synthetic Polyester
Frame Type
Monobond pinch frame
Post-consumer materials
UL Flammability Rating
UL 900
Application
Residential, commercial, and light industrial
Prefilter for high velocity systems
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