Pre-filtration

	P15/150S	P15/350S	P15/500S	R-2/3	R-2/4
ASHRAE Arrestance (%)	67	83	92	93	93
Initial Resistance  (in. w.g.)	0.03 @ 300 fpm	0.04 @ 300 fpm	0.20 @ 300 fpm	0.30 @ 500 fpm	0.40 @ 500 fpm
Final Pressure Drop (in. w.g.)	0.5	0.6	0.8	1.0	1.0
Max. Temperature (ºF)	210	210	210	212, peaks 250	212, peaks 250
UL 900 Classification	Class 2	Class 2	Class 2	Class 1 or 2	Class 1 or 2
Thickness (in)	0.4	0.6	0.8	1.1	1.2
Washable	Yes	Yes	Yes	No	No
Availability	Rolls, Cut Pads	Rolls, Cut Pads	Rolls, Cut Pads	Rolls, Cut Pads	Panels, Links