Materials SD Flooring: 12 ga tread plate SD Crossmembers: 10 ga formed HD Flooring: 3/16 tread plate HD Crossmembers: 7 ga Specifications Lengths: 7' 12 ga. smooth steel rear apron Tubular Bulkhead (4? x 3? x 1/8? wall) Features & Options Adjustable bulkhead with viewing window Fuel in-let cut-outs in rubrail (drivers side)