Perfect Pet Pet Door with Telescoping Frame

Size :Super Large - 15" x 20" Flap Size We developed a sturdy thermoplastic (abs) frame. A see through poly vinyl flap with patented edges to not to warp. A floating sill to insure good closure. And a strong molded abs lock-out slide to restrict the pet's movements when necessary. Then we made it 4 sizes for pets up to 120-pound. And with a tamper proof mounting system and easy installation, it's the most economical pet door in the industry

• Inner telescoping frame that adapts to doors of 1 1/4-Inch to 1 3/4-Inch thickness
• Impact-resistant super-strong thermoplastic clear flap allows pet to see if slide is in place
• Tamper proof mounting system, door cant be removed from outside
• Simple 4-step installation (average install time: 20 minutes)
• Flap size 15-Inch by 20-Inch