PlexiDor The PlexiDor Door Series pet doors are designed for installation into any standard exterior household door. The Door Series can be installed into doors made of wood, fiberglass, steel and glass. Since most people never need replacement flaps, the PlexiDor ends up being one of the cheapest doors to own over its lifetime. Choose the Size for Your Breed – The PlexiDor Door Series and Wall Series pet doors are available in four sizes: Small (SM), Medium (MD), Large (LG) and Extra Large (XL). We have a size to fit your breed. Refer to the PlexiDor Size Chart for more information. Show Filters CategoriesAccessoriesCat DoorsDog DoorsElectronicPartsReplacement FlapsColorBronzeSilverWhiteInstallation LocationWallDoorThrough GlassQualityBestSizeSmall-CatMedium-40lbsLarge-100lbsXLarge-220lbs 12 results foundSort: RelevanceSort: Price(low to high)Sort: Price(high to low)PlexiDor Wall UnitColors: Sizes: 4$359.00 - $998.00Plexidor Electronic pet door and wall unitsColors: Sizes: 2$2198.00 - $2535.00PlexiDor Door UnitColors: Sizes: 4$212.00 - $798.00Plexidor Cat Door and Dog Door Replacement Weatherseal KitsSizes: 4$9.00 - $13.00PlexiDor Electronic Power Supply$29.50Awning for PlexiDor wall or door dog door unitsColors: Sizes: 4$95.00 - $109.00Plexidor Lock Assembly Kit$17.00Plexidor Security CoverColors: Sizes: 3$80.00 - $124.00Plexidor Pet Door Keys$5.00Plexidor Pet Door SpringsSizes: 4$18.00 - $39.00PlexiDor sliding trackColors: Sizes: 3$98.00 - $115.00Plexidor Replacement Dog Door PanelsSizes: 3$53.00 - $68.001