Ideal Pet Products 900 Series Pet Door Replacement Flap Flexible, safe, non-toxic, and see-through vinyl flap 15-inch by 23-1/2-inchin flap is designed to be used only with super-large insulator and 900 series ideal pet doors Simple installation Manufacturer Warranty does not apply to product purchased through Amazon Warehouse Deals Need Assistance? E-mail Ideal Pet Products customer care specialists seven days a week!