High Tech Pet Electronic Power Pet Door (Large) barking collar Formulated with moderate levels of Formulated with moderate levels of protein and with fat levels designed for larger species that benefit from an energy dense food hoop jump and tunnel your new POWER PET Fully Automatic Pet Door will be the most sophisticated appliance your pet will ever own You will find it is actually easier to install a POWER PET door than a conventional pet door and certainly easier than installing a "between the studs type door" The PX is constructed of an ultra high strength ABS composite housing with a bullet proof Lexan plastic door panel