RDS Below Deck 40 Gallon Aluminum Belly TankSpecial Order - Ships When Available. Contact customer service for more information on Special Order items. Side Corners are radius bent, not welded; All tanks have 1/4" NPT pickup, 1 1/2" fill, and 1/2" vent fittings; Add 3" to height for fittings; Gasoline only. No return fitting for diesel fuel; Above Deck Tanks have vented caps with guage units; Below Deck Tanks have electrical sending units and removable vent plugs; StartFragmentISO 9001:2000 compliant; Pressure tested at 3psi under 33CFR ; Meets ABYC & NMMA regulations ; ISO 10088 specificationsEndFragment; This is a special order item and cannot be returned.