This roof curb adapter includes eight ¼"-20 tinnerman speed nut, eight ¼"-20 x ¾ bolts, and is made of steel. It measures 5 inch height. This roof curb adapter also has a galvanized finish.
Technical Specs
ItemRoof Curb Adapter
For Fan Base Size21 1/2 in
MaterialSteel
Curb Side Width20 in
FinishGalvanized
Includes(8) 1/4"-20 Tinnerman Speed Nut, (8) 1/4"-20 x 3/4 Bolts
Number of Fasteners per side2
Top Flange Height2 1/2 in
Adapter TypeReducer
For Curb Size20 in
For Fan TypeDownblast Fans, Filtered Supply Fans, Upblast Fans
Fan Side Width21 1/2 in
FunctionAdapts 22 in Fan Base to Fit 20 in Roof Curb
Metal Material Thickness18 ga
Overall Height5 in
Country of OriginUnited States
(subject to change)