Specification Sheet

299
The heavy-gauge, all G-90 galvanized mounting collar provides a simple solution to installing a fan in a
rough wall opening when a rear safety guard is NOT required. A front wire guard, shutter, and/or rainhood
can be attached to the front prepunched anges. The wall collar can be used in exhaust or supply applica-
tions for all fan sizes. The wall collar is mounted with the fan on the interior side of the building. All collars
ship fully assembled with the fan to lessen jobsite installation costs. We strongly recommend rainhoods and
motorized shutter for all supply applications as well as for exhaust applications where additional weather
protection is desired.
Fan
Size
Wall Collar
1
Minimum
Wall Opening
Flat
Guard
2
Damper
3
Rainhood
4
A B Sq C D (O.D) E F
20 24 1/4 21 25 1/2 24 22 1/2 20 24 1/4
24 30 1/4 21 31 1/2 30 28 1/2 26 28 1/2
30 36 1/4 21 37 1/2 36 34 1/2 32 34 1/2
36 42 1/4 21 43 1/2 42 40 1/2 38 40 1/2
42 48 1/8 21 49 1/2 48 46 1/2 44 44 1/2
48 54 1/8 21 55 1/2 54 52 1/2 50 49 1/2
54 60 1/8 21 61 1/2 60 58 1/2 56 55
60 66 1/8 21 67 1/2 66 64 1/2 62 69
72 80 1/8 26 81 1/2 80 78 1/2 76 75 1/2
Dimensions
(a) Level 3 Construction requires a deeper motorside guard as shown.
Unless shown otherwise supply and exhaust dimensions are similar.
WALL COLLAR MOUNTING OPTION
MODELS LCE/LCS, L2E/L2S, L3E/L3S
BELT DRIVE SIDEWALL PROPELLER FANS