https://www.wrekinproducts.com/access-solutions/highway/gully-grates/e600/dght0e46060kh4f
E600 Ductile iron Gully grate 600 mm x 600 mm DGHT0E4/6060/KH4F | Wrekin
Highway HaloHinge E600 4 flange gully grate 600mm x 600mm clear opening with 100mm frame depth
ductile irongully grate