The Camco Refrigerator Door Block holds your fridge and freezer doors open during storage to promote airflow and prevent mildew and odors. This door prop also prevents the door from swinging open if your RV or trailer is uneven. The unique drawstring design adjusts to accommodate doors thick and thin. A high-strength neodymium magnet attaches to the inside of the fridge to hold the block in place, and the drawstring can tighten to the thickness of the door, holding the door open but preventing it from opening further. When you're not using the Fridge Door Block, stick it to the outside of your refrigerator so that you don't lose it. Also accommodates single door refrigerators. Drawstring adjustment accommodates thick or thin doors High-strength neodymium magnet attaches inside fridge to hold block in place Also accommodates single door refrigerators | Camco RV Refrigerator Adjustable Door Prop