Medium Efficiency Pre-filters

	MP30 - 2"	MP30 - 4"	R-1/ES3	F45S
Rated Air Flow (cfm)	2000	2000	2000	2000
Initial Resistance (in. w.g.)	0.34	0.28	0.29	0.24
Average Arrestance  (%)*	93	93	90	96
Final Resistance (in. w.g.)	1.0	1.0	1.0	1.0
Max. Temperature  (ºF)	160, peaks 200	160, peaks 200	212, peaks 250	160, peaks 200
UL 900 Classification	Class 1 or Class 2	Class 1 or Class 2	Class  2	Class 2
Depth (in)	2	4	15	13
Size Availability	Various	Various	1/1, 1/2, 5/5, 5/6, 5/7	1/1, 1/2, 5/6

* According to ASHRAE 52.1 - 1992