This casting is the Louisville MSD version of a typical double curb casting. This casting comes with a frame, vane grates, hood, and hardware for hood attachment. It fits 24" x 36" ID drainage boxes with a flow area of 2.7 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. Buy America certifications and MSD approval documents are available upon request. 
 
Select models and quantities are available for local delivery or same-day pickup. Freight shipping is required for destinations outside of local delivery zone.