Attwood Low Profile 12 Gallon EPA/CARB Compliant Fuel Tank 

"EPA/CARB COMPLIANT
Fuel tanks are constructed of multi-layer coextruded HDPE and EVOH. Multi-layer tanks are the most robust and durable low-permeation tanks available and meet the functional and safety requirements of the harsh marine environment. Automatic vacuum valve ensures proper fuel flow and eliminates the need for manual vent. Compatiible with 1/4" NPT fittings."

Gals.: 12 w/o Gauge, Size: 24" L x 18" W x 11.6" H", Case: 1