[Durable]- GSW diffuser is made from white powder coated metal making it durable and longer lasting.
[Mounting Size]- For up to 18” diameter round ducts or 18” x 18” rectangle ducts. This product is designed to cover a 18” x 18” hole size. The mounting size is 20” x 20”. Please measure your installation area before purchase.
[Versatile]- This white powder coated metal diffuser is for evaporative/swamp cooler which is perfect for restaurant and bar.
[Easy To Install]- The white powder coated metal diffuser comes with an 1” width edge at the end of the body for easy installation. Screw holes are not pre-drilled, please drill hole on each edge then mount the screw to the ceiling.
[Adjustable Air Outlet]- There are a total of 4 adjustable air outlet/shutoff to control where the air will flow. Body dimension 18”W x 18”L x 6”H.