Three hundred and ten pounds is the rated maximum here, well beyond any dog that fits the 36 x 23 x 23.5 in interior - the figure reflects a frame built from 0.4 in metal tube rather than wire. A slatted bottom spreads weight more evenly than a mesh pan, and a 35 x 23 in tray slides out for cleaning. The door measures 21.5 x 17.5 in and locks. The crate folds for storage and moving. Overall 38 x 25 x 29.5 in in engineered wood and metal at 48.5 lbs, with a tray and guide included.