Ruskin® IBD20-R 1.5 hr. Static Fire Damper, Integral 12" Sleeve, Horiz/Vert, Round Transition

Ruskin® IBD20-R UL 555 1.5 hr. Static Fire Damper, Integral 12" Sleeve, Horiz/Vert, Round Transition

Ruskin® IBD20-R 1.5 hr. Static Fire Damper, Integral 12" Sleeve, Horiz/Vert, Round Transition

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