The YCS Crawlspace Access Door is made from 100% PVC and operates on an innovative slot and lock system (no hinges). We have added a handle, separate door frame, and a lockable barrel bolt latch which allows for easy access. The corners are welded, not nailed for a clean look. The YCS Crawlspace Door is a flush mount and only needs to be screwed into the foundation wall and sealed with a bead of YCS Magic Adhesive. Doors are designed to fit rough openings.