MetroMax Q?? Maximize your storage space with this heavy-duty shelving MetroMax Q?? products are recommended for continuous use in temperatures from ???29 to 52??C (???20 to 125??F), with acceptable intermittent exposure to 93??C (200??F). MetroMax Q?? shelves can quickly become mobile by removing the threaded leveling feet from the mobile posts and adding MetroMax iQ?? stem casters (see 19766-254 series). Shelves are made of steel with electroplated substrate and highly durable, abrasion-resistant epoxy finish. Corner Lock Release?? allows adjustment of polymer shelves in seconds without tools. Open-grid construction allows air circulation and reduces dust and moisture build-up. Shelves up to 121.9cm (48") in length support up to 362.9kg (800lbs.) per level. Shelves between 121.9cm (48") and 182.9cm (72") in length can support up to 272.2kg (600lbs.) per level. The included gridded polymer shelf mats lift off for easy cleaning. Shelf mats feature an antimicrobial coating to protect against bacteria, mold, mildew, and fungi that cause odors, stains, and product degradation. Smooth, rounded epoxy-coated posts are adjustable at 2.5cm (1") increments and are fitted with adjustable leveling bolts to compensate for uneven surfaces. Optional solid mat overlay kits turn standard grid shelves into solid shelves for spill containment. Ordering information: Shelves feature a manufacturer's 15-year warranty against rust; grid shelf mats feature a lifetime warranty. Order shelves, posts, and solid mat overlay kits separately. Shelves come with frame, grid shelf mat, and wedge connectors.