Def Enclosures


Western Fiberglass manufactures a full range of DEF Enclosures to fit every site. Our DEF Enclosures consist of fiberglass walls, an EPS foam core and 304 stainless steel hardware. Available in both standard and custom sizing, we offer options from 250 - 5000 gallon capacity. All enclosures are made in the USA, built with care and covered by a 5-year warranty.