Keep your pet safe and secure with this Heavy-Duty Dog Crate. It features an all-steel construction, welded for improved structural strength. The heavy-duty large dog crate has two doors, one located on the front with two latches and the other on the top with a single latch design. The bottom has a grated floor that allows pet messes to drop down to a tray, so the space stays clean. In addition, both the grate floor and the steel tray can slide out from the bottom for fast and convenient cleanups. This Heavy-Duty Dog Crate includes four rolling casters, two of which lock for easy mobility. When not in use, it folds down for compact storage and easy transport. 37”/42”/48” Square Tube Heavy-Duty Dog Cage, Large Crate, Pet Kennel w/Tray, Black: Material: all steel square welded tubing Color: black Double door design; front door with 2 latches, top door with 1 latch High quality and new type crate special for a large dog w/anxiety or storm issues Grate design floor with tray for fast cleanups Includes 4 rolling casters (2 locking) Folds down for compact storage or transport Easy to assemble heavy-duty dog kennel Overall dimensions: 37”: 36.3(L) x 24.2(W) x 29.1 (H); 42”: 41.7(L) x 29.1(W) x 33.5 (H); 48”: 48.8(L) x 33(W) x 37 (H) Door dimensions: 37”: 19.5 (H) x 14.2 (W); 42”: 24 (H) x 18.5 (W); 48”: 27.4 (H) x 18.9 (W) Tray dimensions:37”: 34.3 (L) x 23.4 (W); 42”: 40.6 (L) x 28.3 (W); 48”: 46.9 (L) x 31.5 (W)