BH® 3960S™ 39″ to 60″ screw type adjustable valve box with lid, WATER. stock item. Other lettering, special lettering or CAM LOCKS may be available. H-20 traffic rated when properly installed in reinforced concrete. For taller sizes or adjustments to grade, use a 1X thru 8X riser or a 14X or 18X extention with this unit, or consider using a BH® 1824S™, 2436S™ or 3648S™ valve box unit, with appropriate BH® valve box risers or extentions where needed. Uncoated cast gray iron two piece box, ASTM A48 CL35B or better, AASHTO M306-10 (M105). Coated cast gray iron lids, ASTM A48 CL30-35B or better, AASHTO M306. (see the specific lid you need for the exact ASTM data) Made In USA. LEED certifications available on request. Please use the contact form or call us to request info & submittal sheets.
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