EXTENSION CHIMNEY COMPATIBLE This range hood chimney is suitable for FIREGAS range hood FGS-USI02G75CC, FGS-USI02G90CC, FGS-USI02G75AC and FGS-USI02G90AC. It can effectively extend to the ceiling and hide the exhaust pipe, making your kitchen more simple and beautiful. PRODUCT DIMENSION:12.97"(W) x 11.79 (D) x 34"(H), the kitchen hood chimney height is adjustiable. Add this extended chimney to the original range hood and chimney which can extend to 9 to 10 inch high ceilings. NOTE: This wount mount chimney package don't include hook, bracket and screw. You need to original bracket and hook to replace the original chimney.