You assemble it, and it is a box with sections. It is a hard box, that fits between the front seat and back seat. It does not expand or contract. It is made of hard material. Make sure the dimensions fit the space. It fits very snugly in my Buick sedan, but the dogs don't want to use it. But it makes for good storage, instead of throwing stuff on the floor. It is very sturdy, but the dogs still lie in the back seat only.

Is the box made of solid wood, msg, or plywood.

It’s not solid, but hard to tell what it is made of, the fabric is sewn around the wood, very sturdy. I have a 95 lbs mix and a 55 lbs husky always moving around in the back seat and so far no failures. I have one of these filled with recovery gear for my 4Runner and the other is filled with extra collars, leashes, dog stuff essentially. My guess would be plywood or particle board.

Will this fit in the middle of 2 captain seats on the back row?

I would measure between the seats just to make sure. What vehicle do you have?

11.5 inches is too big, front seat can’t go back for normal people,Do you have a 10 inch depth?

Hi Dear, we only have 11.5 inches for now.

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🐾 Drive Safe, Drive Stylish – Because Your Dog Deserves the Best Ride!

SPACIOUS COMFORT ZONE - Expands your car’s backseat area, giving your dog room to stretch, stand, or lounge with a clear outside view.
DURABLE PREMIUM BUILD - Crafted with sturdy wooden boards, sponge padding, and reinforced stitching to support up to 200 lbs of weight.
MULTI FUNCTIONAL STORAGE - Doubles as a storage extender for toys, blankets, and snacks—keeping your car organized and your dog’s essentials close.
ULTIMATE SAFETY FOR YOUR PUP - Prevents your dog from slipping into seat gaps during sudden stops, ensuring peace of mind on every drive.
EFFORTLESS SETUP MAINTENANCE - Collapsible design folds in under a minute and features waterproof fabric for quick, hassle-free cleaning.

This Dog Car Seat Gap Filler is designed for dogs up to 100 lbs, providing a secure, spacious, and comfortable area in your car’s backseat. Made with durable wooden boards and waterproof 600D Oxford fabric, it prevents dogs from falling into seat gaps while doubling as a storage extender. Easy to assemble and clean, it’s the perfect travel upgrade for pet owners who value safety and style.

€ 437.28

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TrustScore 4.5 | 7,300+ reviews

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Product care instructions	Wipe clean with a damp cloth. Do not soak in water.
Strap type	Adjustable
Dog Breed Size	Medium
Product Dimensions	50.8 x 29.21 x 36.83 cm; 3.8 kg
Item model number	01
Size	M: 20"L x 11.5"W x 14.5"H
Batteries required	No
Batteries Included	No
Item Weight	3.8 kg

Dog Car Seat Extender with Storage Space, Front and Back Seat Extension for Dogs, Car Gap Filler Suitable for Dogs up to 200 lbs (Medium Size: 20 x 11.5 x 14.5 inch)

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