Typical wood crawl space doors can deteriorate over time and can allow insects and other pests to get in your crawl space. Not to mention, wood leaves room for outside air which makes the space cold and damp. Everlast doors are made from thick PVC Plastic and secured with weatherproof knobs. Unlike wood, it won't shrink or deteriorate over time and it won't require any maintenance. Once installed, the door will ensure that your space is sealed off from outside intrusions and keeps the space warm.