From the Manufacturer:
METAL DOOR LINER
The Ruff Land Performance Kennels door liner is the perfect addition to our composite door for those pets whose goal it is to escape from their kennel. It attaches with the provided hardware to the inside of the kennel door, providing added protection against pushing and chewing. Attach to inside of kennel door to eliminate scratching/chewing damage. Available for X-Large, Large, Intermediate and Medium kennels. Hardware to attach is included.
THIS IS A NON-RETURNABLE PRODUCT
Manufacturer's warranty info can be found here: https://rufflandkennels.com/warranty-policy/