Whiskers & Windows Cat Door for Horizontal Sliding Windows
- Quick, easy installation for horizontal sliding windows with a spring-loaded frame that securely fits into the track without drilling or cutting.
- Adjustable height expands up to 3" for a precise fit, with custom sizing available for non-standard window dimensions.
- Lockable, clear acrylic pet flap with a 4-way locking system allows full control over access, including in-only, out-only, fully locked, or fully unlocked settings.
- Aluminum frames fit window tracks at least 1" wide, while vinyl frames require a minimum track width of 1.5" for proper installation.
- Ideal for rentals and temporary setups, allowing easy removal without permanent modifications.
- Compatible with catios, providing a secure connection between indoor and outdoor spaces.
Product Details
Sizing & Fit
Installation Guide
FAQs
ReviewsProduct Details
The Whiskers & Windows Cat Door for Horizontal Sliding Windows offers a sleek, effortless way to provide your pet with freedom while maintaining security and energy efficiency. Designed for quick installation, the spring-loaded frame adjusts up to 3 inches for a snug fit in standard horizontal sliding windows. No drilling or permanent modifications are required, making it an excellent option for renters, vacation homes, and anyone looking for a hassle-free setup.
Built with durability in mind, the frame is constructed from corrosion-resistant aluminum or vinyl, available in white or black to match your home’s style. Aluminum models fit window tracks at least 1" wide, while vinyl models require a minimum track width of 1-1/2", ensuring a secure and stable installation.
The clear acrylic flap is lightweight yet sturdy, allowing easy passage for cats and small dogs up to 15 pounds. Equipped with a 4-way locking system, this pet door provides customizable access settings, giving you complete control over when and how your pet can use it: indoor access only, outdoor access only, unrestricted access, or no access.
For households with catios, this pet door seamlessly connects your indoor space to an outdoor enclosure, offering pets a safe way to enjoy fresh air and sunshine. Its intuitive design ensures pets can enter and exit comfortably while keeping unwanted drafts out.
Whether you're creating a more pet-friendly environment or need a temporary solution, the Whiskers & Windows Cat Door for Horizontal Sliding Windows is a reliable, stylish addition to any home.
Size Chart
- Large Single Flap: 7"w x 7.5"h
Flap Dimensions:
Single Flap:7 1/2"w x 8"h
The entry way your dog goes through.Step Over Range:
3 1/2"h
Distance from the bottom of the flap to the floor you pet must step over to enter the pet door.
![overall panel width](https://cdn.shopify.com/s/files/1/0325/4524/3274/files/2_506ebf19-e715-4572-9e0c-24825de6b283.png?v=1661898576")
Overall Panel Width:
11 5/8"
How wide the panel is overall.| Flap Size | Flap Dimension | Step Over Height | Overall Panel Width | Recommended Pet Height |
|---|---|---|---|---|
| Large | 7"w x 7 1/2"h | 3-1/2" | 11 5/8" | 4" - 10" |
Window Width Adjustment Ranges:
- 34" - 37"
- 46" - 49"
- Custom Non-Returnable 23" - 34"
- Custom Non-Returnable 37" - 46"
- Custom Non-Returnable 49" - 74.75"
Pet door has 1" framing, measure your track width to make sure that your window will accommodate the panel.
Wondering how to measure your track? Review our Track Measuring Guide demonstrated on a sliding glass door.
Still do not know which flap size to get? Here is a measurement guide to help you out
Find The Best Pet Door Size For My Pet
A
Pet Height: inches
B
Pet Width: inches
Installation Instructions
Difficulty
Easy
Steps
03
Time Required
0.5 Hours
Sections
03
Flags
00
Parts
- 1 Panel Pet Door
- Foam Weather Strip
Tools
- Flathead Screwdriver
Please read instructions & notes thoroughly before installation.
Step 1 Release Spring Mechanism
- Release the height adjustment locks by loosening the screws with a screwdriver.
Step 2 Insert Into Window Track
- Open the sliding window and insert the cat door panel with the knobs facing inside. Place the top edge into the top track of the window.
- Lift up and swing the lower portion of the panel into the bottom track.
- Slide the pet door panel against the window jamb. Make sure that the top is fully extended (not tilted to one side) and the bottom of the panel is on the ridge (pencil rail) in the bottom track.
Step 3 Secure the Panel
- Tighten the height adjustment locks with a screwdriver.
Whiskers & Windows Pet Door Details
Locking the Flap
- To change the 4-Way Lock setting, ensure that the flap is in the vertical resting position, and gently move the tabs left or right as desired. The tabs should move freely without requiring excessive force.
- Locked: Both tabs on the outside.
- Out-only: Both tabs to the right.
- In-only: Both tabs to the left.
- Unlocked: Both tabs in the center.
What if there is a gap between the panel and my window?
- Due to the fact that there are many types of windows, you may need to modify your installation using shims or similar materials such as foam weather stripping.
- If there is a gap, you can use the shims to even out the pet door.
Locking the Panel
- A great way to lock your sliding window is a Charley bar or dowel in the track.
- Both work off the same concept—they block the slider from opening. When engaged you cannot pull the sliding door away from the pet door panel.
FREQUENTLY ASKED QUESTIONS
What if my panel is slightly too tall?
You can trim up to 3/4” off the spring- loaded adjustment piece at the top. This can be done by removing the adjustment pieces with a #2 Phillips head screwdriver and cutting down the flanges. Be careful not to cut too low or you will not be able to put the top back on.
The dark area marks where you can trim:
What if my panel is slightly too short?
We offer height extensions that will add 3/4” to the top of the panel that you slide into the channel at the top. These are made from the same aluminum as the panel so you can match the color.
You can also make your own extension out of nominal 1” wood (which is 3/4” thick), such as a 1x3, if you need more than %" in height. Cut it to the same width as the panel and slide it into the channel at the top. Paint the wood to match your frame color. If the extension makes the panel feel unstable, you can secure it with screws.
FAQ
|
How big of a dog can go through this? The Large Flap would accommodate a dog about 15Lbs, and no more than 10" at the shoulder. |
|
What do I do if this door doesn't come in a size that will fit my window? If none of the sizes will fit your window, you can a custom cat door that will fit your window track. |
|
Can you lock it? Yes, it has a 4-way lock with means you have 4 different access options. You can set it for totally locked, so nothing can go in or out. Open, so they can go in and out as the please. In only, so that once they come in they can't go back out until you let them. Or out only, so once the exit they will need you to let them back in. |
|
Is the flap see through? There is a slight tint, but you can see through it. |
|
Is it hard for really small pets to use? The flap is very easy to push open so small pets have no trouble using it. It is rigid though, so if your pet is timid we would recommend the PetSafe Horizontal Cat Door for Windows. |
|
Could this be used leading out to a catio? Yes! In fact that is one of the more popular reasons customers get these doors. |
|
How much does shipping cost? Shipping is calculated at checkout. |
Warranty
1 Year Limited Warranty
The manufacturer guarantees your purchase for a period of one year from the date of original purchase against any defect arising due to faulty materials or manufacture. Accordingly, any defective item will be repaired free of charge or replaced at the manufacturer’s option provided that the defect has not been caused by neglect, misuse, or normal wear and tear and proof of purchase date is supplied. Your statutory rights are not affected.
Customer Reviews
Size Chart
- Large Single Flap: 7"w x 7.5"h
Flap Dimensions:
Single Flap:7 1/2"w x 8"h
The entry way your dog goes through.Step Over Range:
3 1/2"h
Distance from the bottom of the flap to the floor you pet must step over to enter the pet door. Overall Panel Width:
11 5/8"
How wide the panel is overall.| Flap Size | Flap Dimension | Step Over Height | Overall Panel Width | Recommended Pet Height |
|---|---|---|---|---|
| Large | 7"w x 7 1/2"h | 3-1/2" | 11 5/8" | 4" - 10" |
Window Width Adjustment Ranges:
- 34" - 37"
- 46" - 49"
- Custom Non-Returnable 23" - 34"
- Custom Non-Returnable 37" - 46"
- Custom Non-Returnable 49" - 74.75"
Pet door has 1" framing, measure your track width to make sure that your window will accommodate the panel.
Wondering how to measure your track? Review our Track Measuring Guide demonstrated on a sliding glass door.
Still do not know which flap size to get? Here is a measurement guide to help you out
Find The Best Pet Door Size For My Pet
A
Pet Height: inches
B
Pet Width: inches
Installation Instructions
Difficulty
Easy
Steps
03
Time Required
0.5 Hours
Sections
03
Flags
00
Parts
- 1 Panel Pet Door
- Foam Weather Strip
Tools
- Flathead Screwdriver
Please read instructions & notes thoroughly before installation.
Step 1 Release Spring Mechanism
- Release the height adjustment locks by loosening the screws with a screwdriver.
Step 2 Insert Into Window Track
- Open the sliding window and insert the cat door panel with the knobs facing inside. Place the top edge into the top track of the window.
- Lift up and swing the lower portion of the panel into the bottom track.
- Slide the pet door panel against the window jamb. Make sure that the top is fully extended (not tilted to one side) and the bottom of the panel is on the ridge (pencil rail) in the bottom track.
Step 3 Secure the Panel
- Tighten the height adjustment locks with a screwdriver.
Whiskers & Windows Pet Door Details
Locking the Flap
- To change the 4-Way Lock setting, ensure that the flap is in the vertical resting position, and gently move the tabs left or right as desired. The tabs should move freely without requiring excessive force.
- Locked: Both tabs on the outside.
- Out-only: Both tabs to the right.
- In-only: Both tabs to the left.
- Unlocked: Both tabs in the center.
What if there is a gap between the panel and my window?
- Due to the fact that there are many types of windows, you may need to modify your installation using shims or similar materials such as foam weather stripping.
- If there is a gap, you can use the shims to even out the pet door.
Locking the Panel
- A great way to lock your sliding window is a Charley bar or dowel in the track.
- Both work off the same concept—they block the slider from opening. When engaged you cannot pull the sliding door away from the pet door panel.
FREQUENTLY ASKED QUESTIONS
What if my panel is slightly too tall?
You can trim up to 3/4” off the spring- loaded adjustment piece at the top. This can be done by removing the adjustment pieces with a #2 Phillips head screwdriver and cutting down the flanges. Be careful not to cut too low or you will not be able to put the top back on.
The dark area marks where you can trim:
What if my panel is slightly too short?
We offer height extensions that will add 3/4” to the top of the panel that you slide into the channel at the top. These are made from the same aluminum as the panel so you can match the color.
You can also make your own extension out of nominal 1” wood (which is 3/4” thick), such as a 1x3, if you need more than %" in height. Cut it to the same width as the panel and slide it into the channel at the top. Paint the wood to match your frame color. If the extension makes the panel feel unstable, you can secure it with screws.
FAQ
|
How big of a dog can go through this? The Large Flap would accommodate a dog about 15Lbs, and no more than 10" at the shoulder. |
|
What do I do if this door doesn't come in a size that will fit my window? If none of the sizes will fit your window, you can a custom cat door that will fit your window track. |
|
Can you lock it? Yes, it has a 4-way lock with means you have 4 different access options. You can set it for totally locked, so nothing can go in or out. Open, so they can go in and out as the please. In only, so that once they come in they can't go back out until you let them. Or out only, so once the exit they will need you to let them back in. |
|
Is the flap see through? There is a slight tint, but you can see through it. |
|
Is it hard for really small pets to use? The flap is very easy to push open so small pets have no trouble using it. It is rigid though, so if your pet is timid we would recommend the PetSafe Horizontal Cat Door for Windows. |
|
Could this be used leading out to a catio? Yes! In fact that is one of the more popular reasons customers get these doors. |
|
How much does shipping cost? Shipping is calculated at checkout. |
Warranty
1 Year Limited Warranty
The manufacturer guarantees your purchase for a period of one year from the date of original purchase against any defect arising due to faulty materials or manufacture. Accordingly, any defective item will be repaired free of charge or replaced at the manufacturer’s option provided that the defect has not been caused by neglect, misuse, or normal wear and tear and proof of purchase date is supplied. Your statutory rights are not affected.
