Direct-fit replacement: Swaps into your existing Liberty pet door frame, no frame changes needed Six sizes: Cat Flap, small, medium, large, XL, and XXL to match every Liberty pet door size Two mount-type variants: One cut for Door and Wall Mounts, another cut for Slider and Window Panel Inserts 0°F to 120°F clear vinyl: Same flap material as new Liberty doors, lets pets see through before stepping through Made in USA: Built domestically and backed by a 3-year warranty against defects The Liberty Pet Door Replacement Flap is the flap-only part for an existing Liberty pet door. Use it when the original flap has yellowed, cracked, or been chewed, and the frame is still in good shape.The flap is clear vinyl rated from 0°F to 120°F. Six sizes cover the full Liberty lineup (Cat Flap, small, medium, large, XL, XXL). Each size is offered in two cuts: one for Door and Wall Mounts and one for Slider and Window Panel Inserts. The cuts differ because the frame geometry differs.Before ordering, identify which Liberty product you own and which size. The size is usually printed on a sticker on the inside of the frame or visible in your original order. Pick the matching size, then pick the mount-type that matches your door: Door and Wall Mounts for door and wall products, Slider and Window Panel Inserts for the slider, vinyl panel, and window panel products. If the magnets or weatherstripping are also worn, replace them at the same time.Made in the USA and backed by a 3-year warranty. Easy DIY swap.