Owner's manual

Appendix J: Filter Resistance and Latches
Table J1: Prefilters (MERV 8)
Depth Nominal Size
Capacities (CFM) Resistance @ Capacity (in. w.g.)
Medium High Medium High Final
2” [51 mm]
12” x 24” x 2” [305 x 610 x 51 mm]
24” x 24” x 2” [610 x 610 x 51 mm]
600
1,250
1,000
2,000
0.12
0.12
0.23
0.23
1.00
1.00
4” [102 mm]
12” x 24” x 4” [305 x 610 x 102 mm]
24” x 24” x 4” [610 x 610 x 102 mm]
600
1,200
1,200
2,400
0.12
0.12
0.27
0.27
1.00
1.00
Table J2: 4” [102 mm] Final Filters
Filter Efficiency MERV Rating Nominal Size Capacities (CFM)
Resistance (in. w.g.)
Initial Final
60–65% MERV 11
12” x 24” x 4” [305 x 610 x 102 mm]
24” x 24” x 4” [610 x 610 x 102 mm]
1,000
2,000
0.45 1.50
80–85% MERV 14
12” x 24” x 4” [305 x 610 x 102 mm]
24” x 24” x 4” [610 x 610 x 102 mm]
1,000
2,000
0.65 1.50
90–95% MERV 15
12” x 24” x 4” [305 x 610 x 102 mm]
24” x 24” x 4” [610 x 610 x 102 mm]
1,000
2,000
0.75 1.50
Table J3: 12” [305 mm] Final Filters
Filter Efficiency MERV Rating Nominal Size Capacities (CFM)
Resistance (in. w.g.)
Initial Final
60–65% MERV 11
12” x 24” x 12” [305 x 610 x 305 mm]
24” x 24” x 12” [610 x 610 x 305 mm]
1,000
2,000
0.39 1.50
80–85% MERV 14
12” x 24” x 12” [305 x 610 x 305 mm]
24” x 24” x 12” [610 x 610 x 305 mm]
1,000
2,000
0.53 1.50
90–95% MERV 15
12” x 24” x 12” [305 x 610 x 305 mm]
24” x 24” x 12” [610 x 610 x 305 mm]
1,000
2,000
0.58 1.50
Table J4: Filter Latches for Front Loading/Access
Final Filter Prefilter Latch Venmar PN
None 2” C-70 207312240
4” C-86 19516104
4” nominal
None C-86 19516104
2” Knock-on (4” + 2”) 500026048
4” Knock-on (4” + 4”) 500026049
12” HEPA
None — HEPA frame
2” VP-2 208290023
4” VP-4 19516310
12” double header
None C-80 19516103
2” C-80/VP-2 19516103 / 208290023
4” C-80/VP-4 19516103 / 19516310
VCES-V-CUBE-IOM-1A
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