Replacement Flaps We carry dog door replacement flaps for Plexidor. Please call customer service at 800-749-9609 before ordering your replacement flap or if you have any questions about our replacement parts. Customer service is open Monday through Friday 10-4. You may also email support@dogdoors.com. Show Filters BrandPlexiDorsQualityBestSizeSmall-CatMedium-40lbsLarge-100lbs 1 results foundSort: RelevanceSort: Price(low to high)Sort: Price(high to low)Plexidor Replacement Dog Door PanelsSizes: 3$53.00 - $68.001