Keep a cat’s litter box in tip-top shape with Litter Pan Replacement Doors. This replacement door is specifically designed for the Stay Fresh Hooded Litter Pan, size jumbo, and Arm & Hammer’s Hooded Wave Litter Pan, size jumbo. 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.