The Flexmaster U.S.A.® CBD-BO3-HOK-2U is manufactured from heavier, galvanized steel to meet SMACNA and UMC Standards for commercial construction.
The CBD-BO3-HOK-2U should be installed using SMACNA installation standards.
Damper blade equal to the fitting gauge
BO3, Build-Out (2”), 3/8” square shaft, U-bolt, nylon bushings, locking quadrant, handle
Factory Sealed Seams
Stick on Gasket
CBD BO3 HOK
CBD BO3 SOG HOK
Conical Bellmouth SOG
CBD SOG BO3 UT 3000G