The Rev-A-Shelf SBDT-2730-A-1 Plastic Under Sink Base Drip Tray is your first line of defense against under sink cabinet damage from minor leaks. The unique design not only protects the bottom of your cabinet by holding water, but the tray actually funnels excessive water to the front of your cabinet and out onto the floor so you can tell when it's leaking. Made of durable plastic that does not fold or bend, it's easy to wipe up and is resistant to most household chemicals. Double-check your cabinet's opening (inside dimensions) to allow the best fit. Measure side to side (width), front to back (depth or length), and top to bottom (height). Double-check to make sure your product is within measurements and don't forget to take into account any obstructions (plumbing, hinges, etc.). This sink base tray will fit your 30-inch sink base kitchen cabinet that has a minimum trim size of 25.5 by 21.5 inches.