ProductsHome / JB Solutions / Washing Machine Boxes / Twin Box / Twin Box with Drain & Arrestors Brass Valves (FR) Twin Box with Drain & Arrestors Brass Valves (FR) Twin Box with Drain & Arresters Brass Valves MIP unassembled Categories: Fire Rated Boxes, JB Solutions, Twin Box, Washing Machine Boxes Description JBSFR7574DB Technical Drawing Related products JBSATBOX Small N One Box Washing Machine Boxes