Dimensions: 15 X 18 X 3/8
U-TRIM to any size under 15 inches x 18 inches. The frame is 3/8 thick. It cuts easily with a scissor and snaps into place. Replace dozens of specialty filters. Trim and assembly instructions included. Durable and washable Grease extraction type filter traps cooking grease. Charcoal type filter eliminates odors.