Check the listing for details. GRAINGER APPROVED 4YLJ9 Fire Hose,50 ft,White,Polyester 4YLJ9. Condition: New. Listed at 224.74 USD. Fire Hose, Coupling Lug Style Rocker, Fire Hose Type Double Jacket, Fitting Material Aluminum x Aluminum, Fitting Type MNST x FNST, Hose Color White, Hose Fitting A Material Aluminum, Hose Fitting A Type MNST, Hose Fitting B Material Aluminum, Hose Fitting B Type FNST, Hose Inside Diameter 1 1/2 in, Hose Length 50 ft, Hose Tube Material EPDM, Jacket Material Polyester, Maximum Working Pressure at 70F 400 psi, Standards NFPA 1962, Burst Pressure 1,200 psi Double-jacket reel fire hoses are stronger than single-jacket reel fire hoses and can better withstand being dragged. These hoses have a double-layer polyester jacket with a single-ply extruded EPDM (ethylene propylene diene monomer) lining.Pin rack and reel fire hoses lay flat when not in use and can be folded and stored on a pin rack or.