This standard manhole casting fits a 24" diameter opening and is customized with a high- or low-frame and beehive grate. 
 
This casting includes your choice of a 4" or 7" height frame. The 4" frame is reversible with four 3/4" diameter anchor holes. The 7" frame is nonreversible and has four 1" diameter anchor holes. The 7" frame is comparable to the Neenah R-1772 model frame.
 
The grate on this casting provides an additional 7" of height above the frame with its beehive dome. It has a flow area of 1.3 square feet. 
 
Our castings meet AASHTO specifications. They're made with grey cast iron of ASTM A48, Class 35B standards with a load rating of H-25/HS-20. Select models and quantities are available for same day pickup; call ahead to confirm availability. Freight shipping is required outside of delivery zone.