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Optional FHWA approved to AASHTO requirements
Access door secures with included 1" stainless steel hex head bolt
Includes (4) 2 3/4" diameter x 1 1/16" ID x 1/2" steel washers and (4) 2 1/2" diameter x 1 1/16" ID x 3/8" steel washers to attach to 1" diameter anchor bolts embedded in concrete base (anchor bolts not included).