Lot (2) SUPPLY/ return AIR DUCT PLENUM 17.5 X 21 X 22 LONG with 2 starting collars GALVANIZED STEEL 26 GAUGE. IF YOU DON’T SEE THE SIZE YOU NEED LET ME KNOW AND I WILL BUILD THE SIZE YOU NEED JUST FOR YOU. (tools shown in some photos are not included). MADE IN THE USA! THANKS FOR LOOKING AND PLEASE VISIT MY STORE FOR MORE GREAT DEALS!