Using the ASI 0458 waste receptacle is easy. First, make sure you have the right rough opening in the wall as specified (15-3/4 inches wide by 29 inches high by 4-1/4 inches deep). Install the unit so it extends 4 inches from the wall. Then, insert a reusable vinyl liner on the plastic hooks inside the receptacle to keep it clean. When it's time to empty the waste, use the provided key to open the tumbler lock and remove the receptacle. For maintenance, wipe the exterior with a soft cloth regularly to keep its satin finish looking great. Also, check the locking mechanism from time to time to ensure it's working properly. Be careful when handling the unit due to its weight, and always keep the key in a safe place to prevent unauthorized access.