https://www.mccoys.com/shop/p/6933477-052303-36/imperial-gvo621-c-wall-register-boot-2-14-in-l-12-in-w-galvanized
GVO621-C Wall Register Boot, 2-1/4 in L, 12 in W, Galvanized
Sku: 6933477-052303-36
$17.80
4 Available at
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Used for right-angle transition from round pipe or insulated flexible duct to a register or grille.
Finish
Galvanized
Length
2-1/4
Width
12