Keep your cat's litter box in tip-top shape with Litter Pan Replacement Doors. This replacement door is specifically designed for the Petmate® Stay Fresh Hooded Litter Pan size large and Arm & Hammer's® Hooded Wave Litter Pan size large. To install simply insert the right-sided peg into its designated spot on the litter box followed by inserting the left-sided peg. When installed correctly the door should swing back and forth.