Using the ASI 6459 waste receptacle is easy. Just open the self - closing push door at the front and put your trash inside. Remember to use the provided key to open the tumbler lock when you need to empty it. When installing, make sure to have a rough opening that measures 12 - 3/4 inches in width, 26 - 1/2 inches in height, and 4 - 1/4 inches in depth. Avoid overfilling the receptacle as it can only hold up to 4 gallons of waste. For maintenance, wipe the stainless - steel cabinet and door regularly with a mild cleaner to keep them looking good. Also, check the piano hinge and tumbler lock occasionally to ensure they're working properly.