SPECIFICATIONS: Model No. 811 Suitable for typical fire extinguishers: 20 pounds and 30 pounds. dry chemical, 30.0 lbs. Class D, 19.8 lbs. CO2, 18-pound, 20-pound, and 25-pound MiniGuard (horizontal). Reference diameter: 7.0 - 8.0 inches. Buckeye Fire Equipment manufactures strong and durable mounting hardware for all of our portable fire extinguishers. Whether you're looking for marine vehicle or boat mounting, or simply wall mounting, you can rest assured that all of our brackets and wall hooks are designed to keep your Buckeye fire extinguisher safe and easily accessible.