$140 · Energy Efficient X-Large Dog Door with 9-3/4-Inch by 17-Inch Opening

I bought this new for $180 plus taxes. It's still new in the box. I don't trust my dog to use it responsibly. Check it out on amazon https://www.amazon.ca/gp/product/B001GL2S6Q/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1 Energy efficient structural foam molded plastic Adjustable frame telescopes 3/4-Inch to 1 3/4-Inch thickness Innovative double vinyl flap design creates energy efficient air pocket for maximum insulation Optional wall kit, sold separately Flap size 9 3/4-Inch by 17-Inch