Injection-molded, high-impact ABS plastic Mark Series Fire Extinguisher Cabinets are the ideal way to blanket a building with fire extinguishers. These low-cost cabinets won't dent, rust, or corrode and have plenty of storage space for extinguisher placement. Their unique design eliminates a breaker bar and broken glass too. Cabinets nest, so they require less storage space and reduced shipping costs. Mark I Jr.: 5 1/4" x 7 1/2" x 18 1/4"|Mark II: 6 3/8" x 9 3/8" x 25 3/4"|Mark II Jr.: 6 1/4" x 9 3/8" x 21 3/4"