Model 3500 is a StreetSmart™ "Hi-Lo" vandal-resistant barrier-free pedestal drinking fountain with green powder-coated finish. Pedestal, access door and arm are constructed of corrosion-resistant Type 304 all welded heavy-duty stainless steel. Bowls are integral 3/8" cast stainless steel, which eliminates the possibility of being removed. Recessed chrome-plated push buttons operate front adjustable automatic diaphragm pressure regulated valves. Bubblers are chrome-plated low profile forged brass with 3/8" NPS mounting shank with vandalproof locking pins to prevent turning. Waste strainers are designed to allow insertion of a garden hose for top down unobstructed access for waste clean out. Easy maintenance is possible through a large access door (6" x 22") with heavy-duty hinges and 5/16" square key locks. All exposed fasteners are pinned socket type. Ideal for installation in highway rest areas, parks, correctional facilities and other vandal prone locations. Model 3500 meets current Federal Regulations for the disabled including those in the American with Disabilities Act. Haws manufactures drinking fountains, electric water coolers and electric drinking fountains to be lead-free by all known definitions including ANSI/NSF Standard 61, Section 9, California Proposition 65 and the Federal Safe Drinking Water Act.