Duraflex Heavy Duty Dog Door - Medium Deluxe Collars + Boot It is also the only

It is also the only Pet Containment transmitter that gives you the option of installing an AUTOMATICALLY RECHARGING back-up battery

Fully Automated and Activated by Your Pet's Digitally Coded Ultrasonic Collar: These ingenious doors keep out stray animals while allowing your pets the freedom to come and go without requiring you to act as your pet’s personal doorman

Our BE-500ULTRA Kit gives you 500 feet of our special Ultra-Wire

There is also an optional wall installation tunnel that makes mounting your Power Pet door in a wall even quicker and easier than a conventional flap door

Duraflex Heavy Duty Dog Door - Medium Deluxe Collars + Boot It is also the onlyDuraflex: The Ultimate Pet Freedom Solution! New Duraflex Pet Doors are the premium brand representing the highest quality, most innovative pet doors made. Our Heavy Duty doors are 100% air tight and withstand winds up to 50 mph! These doors use patented technology with rare earth magnets embedded along the entire periphery of our unique wide flange flap. Mating magnets in the frame are mounted on floating seals to perfectly mate with the flap to