Instruction Manual
94 
filters must point towards the blower. (RAB 
= Return Air Bypass, PE  = Power Exhaust 
and PR = Power Return) 
Table 29 - 6-8 and 10 ton Pre Filters 
Feature 6A 
Quantity / Size 
Type 
0 
No Pre Filters 
A 
4 / 16” x 20” x 2” 
Pleated, 30% Eff, MERV 8 
B 
2 / 16” x 20” x 1” 
Metal Mesh, Outside Air 
C 
2 / 40” x 16” x 5/16” 
Lint Screen 
with RAB, Feature A2 = Q, R 
2 / 40” x 16” x 5/16” 
Table 30 - 9 and 11-15 ton Pre Filters 
Feature 6A 
Quantity / Size 
Type 
0 
No Pre Filters 
A 
4 / 20” x 25” x 2” 
Pleated, 30% Eff, MERV 8 
B 
2 / 20” x 25” x 1” 
Metal Mesh, Outside Air 
C 
2 / 49” x 20” x 5/16” 
Lint Screen 
with RAB, Feature A2 = Q, R 
3 / 47” x 12” x 5/16” 
Table 31 - 16-25 and 30 ton Pre Filters 
Feature 6A 
Quantity / Size 
Type 
0 
No Pre Filters 
A 
6 / 20” x 25” x 2” 
Pleated, 30% Eff, MERV 8 
B 
3 / 20” x 25” x 1” 
Metal Mesh, Outside Air 
C 
2 / 55” x 25” x 5/16” 
Lint Screen 
with RAB, Feature A2 = Q, R 
3 / 55” x 16” x 5/16” 
Table 32 - 26, 31, and 40 ton Pre Filters 
Feature 6A 
Quantity / Size 
Type 
0 
No Pre Filters 
A 
8 / 24” x 24” x 2” 
Pleated, 30% Eff, MERV 8 
with RAB, Feature A2 = Q, R 
16 / 12” x 24” x 2”  
B 
6 / 16” x 25” x 1” 
Metal Mesh, Outside Air 
with PE or PR, Feature 1A = B, C 
4 / 16” x 25” x 1” 
C 
8 / 24” x 24” x 5/16” 
Lint Screen 










