RD 4, 5, 6, 7, 8, 9,10, 12, 14, 16, 18, 20, 24

 

 

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BACK DRAFT DAMPER FOR ROUND DUCT WORK
(Model Rd is a butterfly round backdraft damper)

TYPE A
DIAMETER
B
LENGHT
Rd44"4 1/2"
Rd55"4 1/2"
Rd66"4 1/2"
Rd77"4 1/2"
Rd88"4 1/2"
Rd99"4 1/2"
Rd1010"6"
Rd1212"6"
Rd1414"6"
Rd1616"6"
Rd1818"8"
Rd2020"8"
Rd2424"10"

All dimensions in inches