The Deflecto TFG4 4-Inch Adjustable Suspended Ceiling Diffuser is a round adjustable diffuser grill designed for suspended ceiling applications, It can service areas up to 60 square feet in size, This diffuser is easy to install and comes in retail packaging, Round adjustable diffuser grill, Designed for suspended ceiling applications, Handles areas up to 60 square feel, Easy to install, Retail packaging, SKU: PTR14816