Used in floors, walls, or ceiling for connection of square register or grill to round pipe. Equivalent length in supply 35', return equivalent length 10'.
Size 12" x 12" x 12" available 4 per box.
Size 12" x 20" x 12" packed to order.
Sizes 12" x 20" x 14", 12" x 20" x 16", 12" x 24" x 12"; available 3 per box.
Sizes 14" x 14" x 6", 14" x 14" x 12", 14" x 14" x 24", 14" x 20" 12", 14" x 20" x 16", 14" x 20.25" x 14"; available 3 per box.
Sizes 14" x 20" x 6", 14" x 20" x 14", 14" x 24" x 14", 14" x 25" x 14"; packed to order.
Sizes 16" x 14" x 18" - 20", 16" x 20" x 14", 16" x 24" x 16"; available 3 per box.
Size 16" x 20" x 16" packed to order.
Sizes 20" x 20" x 16" - 20", 20" x 25" x 20", 20.25" x 14.25" x 16, 20.25" x 20" x 16", 20.25" x 20.25" x 14" - 18"; available 3 per box.
Sizes 20" x 20" x 14", 20" x 24" x 18", 20" x 30" x 16", 20.25" x 30.25" x 16"; packed to order.
Sizes 20" x 25" x 16", 20.25" x 25.25" x 16", 20.25" x 25.25" x 20"; available 2 per box.
