Straight Register Boot - 12" X 4" X 8" Round Height_18in Easy Installation: Comes with mounting

Easy Installation: Comes with mounting screws for a secure fit in minutes

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 18" OR 18" X 16" duct opening (measured at the opening)

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Straight Register Boot - 12" X 4" X 8" Round Height_18in Easy Installation: Comes with mounting+ Product Details Size & Compatibility The size of galvanized sheet metal straight floor boot is 12" X 4" X 8". It is compatible with 8" 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