We downsized from a borrowed crate the size up from this (42" length) but the 36" is perfectly adequate for our 60-pound lab mix. We don't use it daily anymore--mostly for travel--so it's nice to scrimp a little on storage and packing space as long as it works for the pup. I do wish it were possible to buy a crate without the divider since that seems like a waste when you don't need it.