Vented Side-By-Side Double Battery Box protects your RV batteries against collisions and contaminants. Stores (2) group 24 batteries. Vented design expels hazardous gases, allowing to safely hold batteries in storage compartments. Measures 18 1/8-inches (L) x 14 5/8-inches (W) x 14-inches (H) (including ports) & 18 1/8-inches (L) x 14 5/8-inches (W) x 12 1/2-inches (H) (excluding ports). Includes: (1) battery box, (1) hose, (1) hose mount plate, (1) louvered vent grill, foam tape, and mounting/installation hardware. Safe and dependable RV storage solution.