Return Air Drop
20X16 RETU AIR DROP
25X16 RETU AIR DROP
25X14 RETU AIR DROP
20X14 RETU AIR DROP
Knock Down Plenum
1358 X 11-1/8-35
16-5/8 x 11.5x35
11-1/8 X 17-5/8 X 35
20-1/8 x 11.5 x 35
23.5 x 11.5 x 35
14 X 20.25-47 PLENUM
17.5 X 20.25-47 PLENUM
21 X 20.25-47 PLENUM
24.5 X 20.25 -47 PLENUM
