Energy Saver Dual Pane Series of Patio Pet Doors. Made for the newer vinyl patio doors found in many houses today. More maximum energy savigs, VIP features Low E, double pane, tempered glass panels and double wall multi-flex door flap that keeps winter and summer at bay. Also prevents pets from getting "trapped" by a non-flexible flap if they decide to back out halfway through.
Ideal Pet VIP Insuated Vinyl Patio Pet Door