We got you covered™ with non-locking pipe inlet rings & covers– cast gray and ductile iron, with reversible rings, may be used as top or bottom flanged. Grates are also available. Standard plain (no lettering) stock item. Special lettering, LOGOs or larger sizes from 30″ to 48″ may be available on special orders. Check individual items for traffic rating & ASTM data. Beware of poor quality import imitations, always insist on products made in the USA. Please use the Contact Form or call us to request info & submittal sheets. 1-800-258-2278 Toll Free (972) 263-1360 DFW Local.