Screen fit door has a flap size of 8-7/8 in. wide by 10-1/2 in. tall to accommodate pets up to 20 pounds | Frame mounts directly through any standard screen door to provide a discrete and attractive entrance for your pet | Dual slide locks allow you to control entry/exit for added safety | Magnetized corners ensures a strong seal when door is not in use | Quick and easy installation with simple step-by-step instructions | 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!