These high-quality JUSTRITE Sure-Grip EX Piggyback Flammable Liquids Safety Cabinets add extra storage on top cabinets or on your wall. Mount on the wall with optional brackets or mounts on top of standard 43"Wx18"D cabinet. Double-wall, 18-ga. welded steel construction with 1 1/2" air space to prevent buildup of explosive temps. Dual 2" capped vents can be connected to a venting system. Ground wire connection (wire not included) prevents static buildup. Leakproof 2" door sill helps contain spills. Adjustable leveling feet. Angled SpillSlope shelves with built-in troughs catch incidental leaks and adjust on 2 1/4" centers. Doors feature U-Loc padlock handle with both a keyed lock and padlock hasp for maximum security. Powder coat finish for durability and chemical resistance. Reflective trilingual Haz-Alert warning label included. NOTE: Justrite quality cabinets comply with OSHA 29 CFR 1910.106 regulations, are designed to meet NFPA Standard 30, and most have been tested by Factory Mutual Research and/or Underwriters Laboratories. Please note: California and portions of other localities may require self closing safety cabinet doors. Please check your local codes before ordering. NOTE: FMFactory Mutual Tested and Approved; NDesigned in accordance with specifications set forth in the National Fire Protection Association (NFPA Code 30); OComplies with OSHA regulations.