Ideal Pet Products E-Cat Electromagnetic Pet Door with 4 Way Lock, 7" x 9" Flap Size Selective entry keeps unwanted animals out Transparent, unbreakable lexan flap with 4-way operation Weatherproof design for exterior or interior use Perfect for cats (and small dogs too) up to 25-pound, Kindly refer manual and Video for reference. Opening size: 7-inch by 9-inch Manufacturer Warranty does not apply to product purchased through Amazon Warehouse Deals Need Assistance? E-mail Ideal Pet Products expert US-based customer care specialists seven days a week!