Universal Square Drainage Grates

A square universal flat grate used for grass areas, flower beds, decks, driveways, golf courses, medians, etc. The square universal grate can be used with 3" and 4" Sewer and Drain Pipe (ASTM D2729), 3" and "4 Corrugated Pipe, 3" and 4" Triple Wall Pipe, 6" Sewer and Drain Fittings (SDR 35), and a 6" Round Catch Basin. Grate is designed to withstand pedestrian traffic.


Manufactured from structurally foamed High‑Density Polyethylene (HDPE)  
UV stabilized to protect from sun degradation  
Textured anti-skid surface  
Load rated for pedestrian traffic  
ADA compliant


Color: Green   
Open Slot Width: 1/4"  
Open Surface Area: 13 sq in  
Maximum Flow Rating: 11 GPM  
Maximum load: 250 lbs
6" Round Catch Basin (DB6R1, DB6R2)  
3" or 4" S & D Pipe (ASTM D2729)  
3" or 4" Corrugated Pipe  
3" or 4" Triple Wall Pipe  
3", 4" or 6" S & D Fittings (SDR 35)

Model Comparison

  • DG7USG: 7" Universal Square, Flat Grate
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