We now own 4 of these 21 wide narrow crates, for use side by side in an SUV Two are 42 long and two are 36 long. They are very sturdy and provide a lot of flexibility with the configuration of crates in an SUV. While we have a Suburban, we have a larger crate for our Weimaraner, and needed to fit 3 more crates in for our Whippets. These Side by Side crates are pretty much the only alternative out there, and while they're on the pricey side, the Wayfair price is a good deal and I'd definitely recommend them to anyone needed a narrow crate to fit space constraints.