Sliding Glass Dog Door, Adjustable Height, Lock, Medium Dogs

Sliding glass dog door inserts give your medium dog independent in-and-out access without drilling into your patio door frame. This adjustable-height panel installs fast with a turn knob and integrated flap, making it a practical choice for renters and busy homes. A triple-layer insulated PVC flap helps reduce drafts, while the tempered glass window and aluminum alloy frame are built for frequent daily use.

• Fits most sliders with adjustable height from 75 7/8" to 80 11/16" for a snug, stable setup


• Installs quickly with no drilling; adjust height by turn knob and assemble in one step


• Delivers smoother pet traffic with a rotating metal-hinge flap designed for frequent use


• Helps block drafts with a triple-layer insulated PVC flap that resists scratching and impact


• Secures access with a slide-in closing panel and button lock for nights or when you’re away

Keep your routine simple while giving your pet controlled freedom. This sliding glass pet door insert combines an aluminum alloy frame with a tempered glass window to match typical patio door styles, and the medium flap size suits active dogs up to 40 lbs. When you need full control, slide the closing panel down and lock it in place. Grab yours today to upgrade your slider without permanent changes.

• Adjustable height: 75 7/8" to 80 11/16" (1927–2049 mm)


• Flap opening: 8 1/4" W × 12 1/4" H


• Recommended pet size: up to 40 lbs (medium)


• Frame material: Aluminum alloy


• Window material: Tempered glass


• Flap material: PVC (triple-layer insulated)


• Locking: Slide-in closing panel + button security lock


• Item weight (with accessories): 16.9 lbs / 7.7 kg