End Register Duct Boots - 12" X 4" X 7" Round End Center is Compatible with Duct 7" Insulated Line + Product Details Size -

+ Product Details Size - 10"w X 10"h X 2"d (for duct opening measurement only)

and the door opens smoothly

Actual Dimensions: 21

Actual Filter Size – 31 3/4"w x 33 3/4" x 1"

allowing unrestricted airflow for optimal HVAC performance

End Register Duct Boots - 12" X 4" X 7" Round End Center is Compatible with Duct 7" Insulated Line + Product Details Size -Working 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.