Our Products AluminumAluminum Valve Boxes, Extension & RisersAluminum Rectangular Frames, Grates & CoverAluminum Meter Pit CoversAluminum Manhole Ring & Covers, Extension Rings, & Frost Proof CoversAluminum Inverted Manhole Ring & CoversCast IronCast Iron Valve Boxes, Roadway Boxes, Curb Boxes, Triangle Boxes, & Clean OutsCast Iron Meter Pit Covers, Top Lids, ExtensionsCast Iron Manhole Ring & Covers, Frost Proof Covers, & Extension RingsCast Iron Inverted Manhole Ring & CoversCast Iron Inlet Frames & Grates, Tree GratesDuctile IronDuctile Iron Manhole CoversSteelSteel Inlet GratesPlasticPlastic Inner Lids & Meter Cover Top Lids Search Submit Clear Cast Iron - Detectable Warning Plates - SWP1224 OVERVIEWMaterial: Cast Iron Description: Detectable Warning Plates Model #: SWP1224 Specifications CDOT Approved 40 lbs NOTES: TRUNCATED DOME SHAPE ANDSPACING ARE COMPLIANT WITH ADA,WITH A SLIP RESISTANT TEXTURED SURFACEWITH A 0.8 COEFFICIANT OF FRICTIONRATING Product Details