Gun Dog Heavy Duty Dog Door Magnidor Simply use the red and

Simply use the red and green locking tabs to set the door to locked

This aluminum sash window insert requires no drilling or cutting (can be trimmed 3/4" shorter with a metal cutting blade if needed) and can be installed in seconds

5"w x 15"h) to go out with ease

Equipped with new weather stripping

Gun Dog Heavy Duty Dog Door Magnidor Simply use the red andHeavy duty doggie doors for large, active dogs Durable, aluminum frame and acrylic flap withstands hyper dogs and rough climates Thick flap is chew proof Installs in kennels, doors, and walls with proper framing Available in large size (11"w x 15"h) only Engineered by an owner of highly active labradors in Minnesota, the Gun Dog Heavy Duty Dog Doors are sturdy, long lasting designs made to withstand extreme weather conditions. Featuring a thick,