Amazon.com: Camco Double Battery Box | Safely Stores RV, Automotive, and Marine Batteries | Features a Heavy-Duty Corrosion-Resilient Polymer Construction and Measures Inside 21-1/2" x 7-3/8" x 11-3/16" (55375) : Automotive
Dual Battery Box for P.10 and P.1 Batteries – Liguori Drag Racing LLC
Dual Battery Tray for Jeep Wrangler JK (2012-18) – M.O.R.E.