Transparent Glass Pet Door with 1.4-Way Double-Button Closure Key benefits - Control pet access easily: four locking modes let you decide whether pets can enter, exit, both, or not at all—no more opening the door for them. - Quiet and safe operation: bristle brushes and a rubber-lined interior cushion movement, reduce noise, and protect your pet from hard edges. - Discreet installation for glass: a transparent flap blends with glass doors and windows so the door remains unobtrusive. Main features - 1.4-way double-button closure: four closure options — both directions (in and out), closed (locked), in-only, out-only. - Noise reduction: bristle brush seals around the flap lower sound when pets pass through and reduce drafts from opening and closing. - Pet-safe finish: soft rubber interior helps protect paws and prevents chafing during use. - Transparent construction: designed specifically for installation on glass and sliding glass doors and windows; looks discreet once mounted. - Installation options: can be fixed with screws or bonded with glass glue (glass glue not included). Compatibility and dimensions - Flap (pet passage) size: 19.5 x 16 cm / 7.7 x 6.3 inches. - Outer door frame size: 30 x 30 x 3.5 cm / 11.8 x 11.8 x 1.4 inches. - Suitable for cats and small dogs up to 6 kg / 13 pounds. Practical use scenarios - Apartment balcony access: mount on a sliding glass door to let your cat visit the balcony safely without you needing to open the door each time. - Patio or backyard access: install on a glass patio door so a small dog or cat can go out for fresh air and return independently. - Nighttime convenience: allow pets to come and go without waking household members, while retaining the option to lock the flap when needed. Installation notes and support - Designed for glass mounting; use screws or glass adhesive (glass glue not included) per your door type and local building rules. - If you have any questions about fit, installation, or compatibility, please contact us immediately.