Straight Register Boot - 10" X 4" X 6" Round Mounting Bracket Actual Filter Size – 21

Actual Filter Size – 21 3/4"w x 5 3/4" x 1"

Ideal for Walls & Ceilings: Designed for seamless installation in standard 6" X 4" duct openings

Its linear bar design maximizes ventilation

actual front end outer dimensions are approximately 10 5/8" width X 28 5/8" height

Straight Register Boot - 10" X 4" X 6" Round Mounting Bracket Actual Filter Size – 21+ Product Details Size & Compatibility The size of galvanized sheet metal straight floor boot is 10" X 4" X 6". It is compatible with 6" duct Superior Quality Made in the USA. Our straight register boot is made of high quality galvanized steel metal for durability and rust prevention. Applications The straight boot is used for the transition from round pipe or insulated flex duct to register or grille + Product Description If you are looking for a