EASY DOG DOOR: As your dog goes in or out through the Gun Dog House Door Easy Dog Door, the inner panel swings freely on its hinge to allow easy access. Close tolerances mean less air infiltration than other free-swing pet door designs. The Easy Dog Door is recommended where weather isn't a huge concern and for older dogs and dogs that are timid or arthritic. MADE TO LAST: Gun Dog House Door is the industry’s most durable and weather protected dog door on the market today. Available in many sizes to best fit your canine or feline companion. Easy to install every door we make is chew proof and hold a manufacturer's warranty that lasts for 10 years. RAIN OR SHINE: Our dog doors are made to withstand any elements that may be thrown at it, we ensure that you will be installing an energy efficient door that will seal off the elements and keep your energy bill from spiking. FREE SWINGING HINGE: The inner panel swings freely on its hinges to allow easy access. Close tolerances mean less air infiltration than other free-swing pet door designs. We designed the easy door for those pups that have slowed down over time and need a door with a little less resistance or simply if your dog is timid. OUR GOAL: Providing you with a dog door that will last many years, we know you have a four legged best friend that needs to go outside and back inside without you always having to be there. We have managed to make a door that will withstand the elements from the weather and the chewing from your pup. As your dog goes in or out through the pet door, the inner panel swings freely on its' hinge to allow easy access. Close tolerances mean less air infiltration than other free-swinging pet doors. Two-Way Dog Door Design. FREE SWING DOOR. No spring-hinge. Recommended for dogs that are timid, arthritic, or old, and if you need a silent operating dog door. Aluminum Frame. Weighted closure to self shut. Hardware Included: only 4 screws required Installation Size: 12 1/2" x 17 1/4" opening. Dog Door Frame Size: 14" x 18" Dog Door Opening Size: 11" x 14 1/2". Optional Close-Off Panel available separately. Made in the USA.