Galvanized metal strips that frame the door and the edges of the door opening. Just slip them over the wire edge, and crimp them tightly in place with J-clip pliers.
These metal frames provide more strength &rigidity than plastic door liners.
We stock 10 3/4", 12 3/4" and 14 3/4". Sold Individually

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Door guard trim - comes in 30" lengths and 6 colors. For use on wire cage door openings. Prevents getting scratched by the wire.

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Cage door edges reinforce the front edge for doors located at the top. Comes in 2 widths - 8" and 12"

Aluminum cage hole liners work very well for chinchilla, rabbit, or small animal cages when you want to provide a pass-through to another cage. The width of the liner is .75". They come in 2 sizes: 4" and 5"