Amazon.com: RV Battery Lock - Bracket for 6 Volt Battery Box for Travel Trailers and popup Campers 1 Bracket only, You Need to Purchase 2 if You Have 2 Batteries : Automotive
Century Plastics: White Heavy Duty Battery Box - (part#: GC-G)
6 Volt (Dual GC-2 Golf Cart Batteries) - BatteryShackle
Camco Double Battery Box | Camping World
84-9425 - Battery Boxes, Commercial, Single 4D/Dual 6 Volt
Amazon.com: Camco Heavy Duty Double Battery Box with Straps and Hardware - Group GC2 | Safely Stores RV, Automotive, and Marine Batteries | Measures Inside 21-1/2" x 7-3/8" x 11-3/16" | (55375) : Everything Else