These Extra Heavy Duty Full Size Pillow Top Mattress Plastic Bags 4 Mil 56x15x95 Gusseted offer amazing clarity while providing superior protection against the elements, dirt, dust moisture and debris for moving or storage. These Extra large 3 mil plastic mattress bags for full sized beds are available to protect your box spring bed mattress. These large bags can be used to cover hospital bed frames and are able to be made without vent holes on a custom made basis. Mattress bags have butterfly vents on both sides 3" from the side, 10" up from the bottom and 10" between each hole.