18 inch Plastic Trash Compactor Bags, 60 Per Package. Patented SLIP-N-GRIP design keeps the bag in place during use. Heavy duty plastic is made with 50% post consumer recycled plastics. Pleated bottom ensures a custom fit in all 18" rectangular compactor brands. Super strong resin increases puncture and tear resistance to help keep your trash in the bag. This is a new GENUINE Whirlpool Replacement Part.