There are also Central Metal Bench Crates, narrow width. Pricey but strong. The Bench Crates have the tiny squares like the original Kennel Aire did. They also come in an unusual size, only 40 inch long, as well as the 36 x 21 and 42 x 21. They are not prone to flying open in a tipping or roll over accident as the MidWest ones are. They have spring loaded latches. (If you doubt me, just put a MidWest crate on its side: the slidebolts unlatch if the side down is away from the closed position.) My regular mini fold are decades old, and so a friend's bench crates. Unlike the regular mini folds, they are more stable in a vehicle as they are not up on legs. For a yellow Lab, you may wish to special order the stainless steel pans instead of the galvanized ones. OR line with a matching plastic pan from MidWest, if it fits.