Whiskers and Windows Cat Door for Vinyl Horizontal Sliding Windows - Large Pet Flap for Cats (57"-60" Height) | Easy Entry & Exit Control | Weatherproof & Durable White Design | Perfect for Indoor/Outdoor Cats, Patio & Screen Doors

For Cats On the Go Freedom Your Cat Deserves. The Whiskers & Windows Horizontal Sliding Window Panel is a premium cat door solution for allowing your cat the freedom to go outside without breaking the bank. The panel is engineered with high-quality single pane, tempered glass, sturdy vinyl framing, and a weather-resistant locking plastic cat flap. The spring-loaded top allows for simple, non-permanent installation in a matter of minutes, making it perfect for renters and homeowners alike. Each panel has a 3-inch adjustment range to accommodate any window height. Comes With a 4-Way Locking System: Unlocked: any pet can enter or exit Locked: no pet can enter or exit Out-Only: pets can only go outside and cannot reenter In-Only: pets can only come inside and cannot leave again Quick & Easy Installation: Apply Additional Weatherstripping Reinforce the energy efficiency value by applying additional, adhesive weather stripping along the edges of the panel.Weatherstripping is not included with purchase. Adjust Spring-Mechanism Loosen the height adjustment locks at the top of the panel with a screwdriver.Loosening or tightening the screws make the panel taller or shorter to fit snugly into your window frame. Insert into Slider Track Insert the panel by the top adjustment piece first, pressing up to compress the spring, then inserting the bottom. Gently release. Tighten the adjustment piece screws to lock the panel at the perfect height. Lock Your Window You can install a c-clamp at the bottom of your window track to prevent intruders from opening your window. You can also use a charley-bar or dowel. To permanently install your panel, you can screw it into the track with a drill. This is not recommended for renters. Find Your Flap Size Measure your cat to ensure that the flap is at least 1" above the highest point of their back (this may be their shoulders, mid-back, or tailbone).Please ensure that your pet is comfortable stepping over both the step-over and the extra distance between the window level and the outdoor ground. Find Your Height Adjustment Range To find your height adjustment range, measure your window track from the lowest part of the bottom corner of your window up to the highest point of the top corner. Make sure there is nothing blocking your measuring tape from reaching the frame's corner.Select the height adjustment range that your sliding window track height falls in. Check Your Track Width Your sliding window track needs to be at least 1-1/4" wide to accommodate the Whiskers & Windows Horizontal Window Pet Door.Measure the width of your bottom track to ensure that the panel will fit. Whiskers & Windows Cat Door for Sliding Glass Doors Whiskers & Windows Cat Door for Sash Windows Whiskers & Windows Cat Door for Horizontal Sliding Windows Liberty Cat Door for Sliding Glass Doors Liberty Pet Door for Doors Liberty Pet Door for Walls Buying Options Buying Options Buying Options Buying Options Add to Cart Add to Cart Customer Reviews 3.5 out of 5 stars 10 3.0 out of 5 stars 1 3.7 out of 5 stars 22 — 4.5 out of 5 stars 15 4.7 out of 5 stars 20 Price — no data — no data — no data — no data $249.99$249.99 $299.99$299.99 Pet Door Type Panel Insert Panel Insert Panel Insert Panel Insert Door Mount Wall Mount Flap Material Plastic Plastic Plastic Vinyl Vinyl Vinyl Locking Flap ✓ ✓ ✓ X X X Insulation Level Mild weather Mild weather Mild weather 4-Season 4-Season 4-Season Pet Size Cats & Small Dogs Cats & Small Dogs Cats & Small Dogs Cats & Small Dogs Up to XL Dogs Up to XL Dogs