MB-1.5 Polyethylene Water Meter Box Approximate Measurements 17 1/4" x 12 3/4" x 18" Proven Service The uniquely formulated material used in the MB-1.5 meter boxes have been tested and proven in service by water and gas industries. The MB-1.5 meter box has all the same characteristics as the MB-1 but with a depth of 18" this box was engineered for communities with a moderately deeper frost line. The superiority of the MB-1.5 meter box offers industry a tremendous economy through longer life. Proven Processing Our structural foam molding process allows our parts to have a cellular foamed core surrounded by integral skins. The process gives our products high strength-to-weight ratio making it have greater rigidity than solid parts of the same material and of equal weight. Item # 2