DO NOT REMOVE THE PROTECTIVE FILM. Does your pet like to scratch? Our Tempered Glass Replacement Doors for Zen Habitats 3.0 Pro 4'x2'-based reptile enclosures can lessen marks from scratching and may be the safest and best glass door choice for your pet. Our tempered glass is five times stronger than ordinary glass. If it does break, its film coating will keep the glass from shattering into the enclosure.