Flanged center end register boot

Use in floors, walls, or ceiling for round pipe connection to square or rectangular registers and grills.
Part # Item Name Box Qty
017-0085 10 x 4 - 4 Flange Center End Register Boot 12
017-0090 10 x 4 - 6 Flange Center End Register Boot 12
017-0095 10 x 6 - 6 Flange Center End Register Boot 12
017-0100 14 x 6 - 8 Flange Center End Register Boot 12