INLET STONES FOR CATCH BASINS IN THE CONFIGURATIONS YOU NEED

Williams Stone Company offers stones meeting MassDOT specifications, as well as the commonly requested Pittsfield, MA, Worcester, MA and Manchester, CT city specifications, which we frequently keep stocked!

Inlet Stone Sizes

All MassDOT inlet stones are 7 inches deep by 6 feet in overall length and 15 inches high (7"W x 15"H x 6'L). 

Type of Inlet Corners: Straight or Curved

Width of Inlet Opening: Single 24" or Double 48"

Height of Inlet Curb: Standard 16" +/- 1" or Low 12" +/- 1"

Williams Stone Company can also produce inlet stones to meet any other state or municipal specifications. Please contact us for nonstandard configurations, including radius curves.

Edge Detail Options

Buzzed: 1/4-inch camfer (or eased) edge.

Rounded edge (Bullnose): one or both edges are chamfered and then rounded off to 1/2-inch or greater radius.

Chamfer: 45-degree bevel is standard, 1/2", 3/4: or 1".