Rectangular Catch Basin Frames & Grates

US Foundry square and rectangular catch basin frames and grates, including low-profile angle frames and state DOT standard frame-and-grate sets. Frames are grey iron (ASTM A48 Class 35B) with bolted, reversible and I-beam configurations where the catalog lists them; clear openings range from 10-1/2" x 10-1/2" up to 22" x 67-3/4". Every item is quote-only — request pricing and availability for your project.