Master Flow 14 in. x 6 in. to 8 in. Universal Register Box with Flange

This Master Flow 14 in. x 6 in. to 8 in. Universal Register Box with Flange is ideal for creating an in-line transition from round pipe to an air register. It has a built-in flange for your convenience. Creates a straight, in-line transition from an insulated flexible duct or round pipe to an air register or grille.