Manual
Aerovent IM-121 3
Dimensions and Weights
Models ATD/ATDR
MODEL
DAMPER
SIZE
CANTED
CURB SIZE
SELF FLASH
CURB SIZE
ROOF
OPENING
ATB ATBR
110B 110B
18 x 18 22
1
⁄2 x 22
1
⁄2 23
1
⁄2 x 23
1
⁄2 18
1
⁄2 x 18
1
⁄2
120B 120B
18 x 18 22
1
⁄2 x 22
1
⁄2 23
1
⁄2 x 23
1
⁄2 18
1
⁄2 x 18
1
⁄2
140B 140B
18 x 18 22
1
⁄2 x 22
1
⁄2 23
1
⁄2 x 23
1
⁄2 18
1
⁄2 x 18
1
⁄2
160B 160B
18 x 18 22
1
⁄2 x 22
1
⁄2 23
1
⁄2 x 23
1
⁄2 18
1
⁄2 x 18
1
⁄2
180B 180B
24 x 24 28
1
⁄2 x 28
1
⁄2 29
1
⁄2 x 29
1
⁄2 24
1
⁄2 x 24
1
⁄2
210B 210B
28 x 28 32
1
⁄2 x 32
1
⁄2 33
1
⁄2 x 33
1
⁄2 28
1
⁄2 x 28
1
⁄2
240B 240B
28 x 28 32
1
⁄2 x 32
1
⁄2 33
1
⁄2 x 33
1
⁄2 28
1
⁄2 x 28
1
⁄2
300B 300B
34 x 34 38
1
⁄2 x 38
1
⁄2 39
1
⁄2 x 39
1
⁄2 34
1
⁄2 x 34
1
⁄2
360B 360B
40 x 40 44
1
⁄2 x 44
1
⁄2 45
1
⁄2 x 45
1
⁄2 40
1
⁄2 x 40
1
⁄2
420B
— 46 x 46 50
1
⁄2 x 50
1
⁄2 51
1
⁄2 x 51
1
⁄2 46
1
⁄2 x 46
1
⁄2
480B
— 50 x 50 56
1
⁄2 x 56
1
⁄2 57
1
⁄2 x 57
1
⁄2 50
1
⁄2 x 50
1
⁄2
MODEL
A B C E
AVG. UNIT
WT. (LB.)
ATB ATBR
110B 110B
30.00 28.56 28.00 24.00 96
120B 120B
30.00 27.19 28.00 24.00 99
140B 140B
30.00 27.68 28.00 24.00 110
160B 160B
30.00 29.81 28.00 24.00 116
180B 180B
36.00 32.31 30.00 30.00 139
210B 210B
45.00 35.61 28.25 34.00 157
240B 240B
45.00 37.56 28.25 34.00 169
300B 300B
54.00 38.25 31.00 40.00 266
360B 360B
63.00 43.88 34.00 46.00 391
420B
— 69.00 46.75 36.00 52.00 478
480B
— 75.00 49.13 39.00 58.00 523
MODEL
DAMPER
SIZE
CANTED
CURB SIZE
SELF FLASH
CURB SIZE
ROOF
OPENING
ATD ATDR
071B-073B 071B-073B
10 x 10 15
1
⁄2 x 15
1
⁄2 16
1
⁄2 x 16
1
⁄2 10
1
⁄2 x 10
1
⁄2
081B-083B 081B-083B
10 x 10 15
1
⁄2 x 15
1
⁄2 16
1
⁄2 x 16
1
⁄2 10
1
⁄2 x 10
1
⁄2
091B-093B 091B-093B
14 x 14 18
1
⁄2 x 18
1
⁄2 19
1
⁄2 x 19
1
⁄2 14
1
⁄2 x 14
1
⁄2
110B 110B
18 x 18 22
1
⁄2 x 22
1
⁄2 23
1
⁄2 x 23
1
⁄2 18
1
⁄2 x 18
1
⁄2
120B 120B
18 x 18 22
1
⁄2 x 22
1
⁄2 23
1
⁄2 x 23
1
⁄2 18
1
⁄2 x 18
1
⁄2
140B 140B
18 x 18 22
1
⁄2 x 22
1
⁄2 23
1
⁄2 x 23
1
⁄2 18
1
⁄2 x 18
1
⁄2
160B 160B
18 x 18 22
1
⁄2 x 22
1
⁄2 23
1
⁄2 x 23
1
⁄2 18
1
⁄2 x 18
1
⁄2
180B 180B
24 x 24 28
1
⁄2 x 28
1
⁄2 29
1
⁄2 x 29
1
⁄2
24
1
⁄2 x 24
1
⁄2
MODEL
A B C E
AVG. UNIT
WT. (LB.)
ATD ATDR
071B-073B 071B-073B
22.00 24.44 18.00 17.00 100
081B-083B 081B-083B
22.00 24.44 18.00 17.00 100
091B-093B 091B-093B
22.00 26.13 18.00 20.00 120
110B 110B
31.00 28.31 28.00 24.00 135
120B 120B
31.00 27.19 28.00 24.00 135
140B 140B
31.00 27.68 28.00 24.00 145
160B 160B
31.00 29.81 28.00 24.00 180
180B 180B
37.00 29.17 30.00 30.00 180
ROOF OPENING
(DAMPER SIZE + 0.50 INCHES)
DAMPER
CURB
2.00
B
E SQUARE
CURB SIZE
A DIA.
C
Models ATB/ATBR
ROOF OPENING
(DAMPER SIZE + 0.50 INCHES)
DAMPER
CURB
2.00
B
E SQUARE
CURB SIZE
A DIA.
C
Notes:
1. Self-flashing, vented restaurant curbs are sized the same as canted
curbs (for use with hinge).
2. Dampers are not to be used with restaurant fans.
Notes:
1. Self-flashing, vented restaurant curbs are sized the same as canted
curbs (for use with hinge).
2. Dampers are not to be used with restaurant fans.