Why it matters
This insert fits sliding windows 32 to 36 in wide and installs or comes out in minutes without tools or damage, which suits renters. Four lock modes control access.
A magnetic closure and gray brush strips keep out insects and cold air. The frame is coated aluminum alloy with a hard-glass panel, built for all seasons.
Who it's for, and who should skip it
Good fit if
- Renters
- Sliding windows
- Catios
Look elsewhere if
- Windows outside 32–36 in
- Hinged windows
- Upper floors without a catio
Pros and cons
Pros
- No cutting
- 4 lock modes
- Removable
Cons
- Only 32–36 in windows
- Any animal can use it
- Window security
Limitations to weigh
- Make sure the window still locks securely with the insert fitted.
- Prop the flap open for the first days and reward your cat for using it; most cats learn within a week.
- A flap that opens for any cat can let neighbors' cats and wildlife in; selective flaps prevent that.
Specifications
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Material | Metal | Retailer |
|---|---|---|
| Frame material | Aluminum | Retailer |
| Closure | Magnetic | Retailer |
| In the pack | 1 Count | Retailer |
| Pieces | 1 | Retailer |
| Model number | BSCHMMT03W | Retailer |
Alternatives worth comparing
More cat flaps & doors we cover
Final verdict
A smart no-damage way to add a cat flap.
Where to buy
Our links open this exact model's product page. Prices and stock change; check what's included before you order.
Prices change often; the button shows today's price.
Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure
Questions buyers ask
What windows does it fit?
Sliding windows 32 to 36 in wide.
Do I need tools?
No, it installs tool-free.