End Register Duct Boots - 12" X 4" X 7" Round End Center is Compatible with Duct 7" return grille + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 18" or 18" x 6" duct opening (measured at the opening)

+ Product Details Size – 16"w X 10"h is the size for the duct opening measurement only

Actual Filter Size – 7 3/4"w x 7 3/4" x 1"

Rigid Built For External Use– The sturdy and rigid design features noise free components that eliminates vibration and excess noise to the louvers

End Register Duct Boots - 12" X 4" X 7" Round End Center is Compatible with Duct 7" return grille + Product Details Perfect FitWorking Accordion + Product Details Size & Compatibility The size of a boot register end is 12" X 4" X 7" galvanized floor boot end center 26 gauge, compatible with duct 7" Superior Quality Made in the USA. Our end register boot is made of high quality galvanized sheet metal, ensuring durability and a secure connection to consecutive duct joints Applications Solid stamped steel with counter sunk screw holes (screws included) and no sharp edges.