EZ Shim 4 In. Quick Align Plastic Hinge Shim is designed to assist in aligning doors quickly and easily within the door jamb. Crafted from high-impact plastic, these shims exceptional sturdiness and durability, ensuring they won't compress under pressure. This makes them the tool for achieving precise and accurate door alignment, eliminating gaps and promoting smooth door operation. Whether you're installing a new door or adjusting an existing one, the EZ Shim Quick Align Plastic Hinge Shim provides a reliable solution to achieve the fit. Model Number: HS400BP