18"×30" Ductile Iron Grate Set
Elongated curb-inlet and gutter grate
18"×30" elongated ductile iron grate and frame set. Hot-dip galvanized, AASHTO H-20 rated, for curb-inlet and gutter-line catch basins where flow needs to be intercepted along the curb.
| Product Code | LZB-DG-S18x30-D400 |
|---|---|
| Clear Opening | ~16"×28" within 18"×30" frame |
| Overall Size | 18"×30" (460×760 mm) |
| Material | Ductile Iron QT500-7 |
| U.S. Material Equivalent | ASTM A536 Grade 65-45-12 |
| Load Rating | AASHTO H-20 / D400 |
| Assembly Weight | 90–125 lb (41–57 kg) assembly |
| Surface Finish | Hot-dip galvanized per ASTM A123 |
| Application | Curb inlet, gutter intercept, side-channel drainage |
- · ASTM A536 / ASTM A123
- · AASHTO H-20
Why specify this
- ✓ Elongated geometry for curb-line water capture
- ✓ Hot-dip galvanized per ASTM A123
- ✓ Bicycle-safe slot orientation per request
- ✓ H-20 rated for in-roadway placement
- ✓ Matched grate-and-frame set, no field fitting
Curb-inlet basins capture water flowing along the gutter line and need an elongated grate to match the inlet geometry. The 18”×30” footprint is a common configuration in U.S. municipal storm-drain catalogs and slots into standard precast inlet structures.
Slot direction (perpendicular to the curb for cyclist safety) and any custom city marking can be confirmed against the project drawing.
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