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N ote: When specifying/ordering grates, refer to “Choosing the Proper Inlet Grate” on pages 117-118. For a complete listing of FREE OPEN AREAS and WEIR PERIMETERS of all NEENAH grates, refer to pages 306-311.
R-4351-B Beehive Grate Heavy Duty
WEIR
SQ. PERIMETER CATALOG GRATE FT. LINEAL NUMBER TYPE OPEN FEET R-4351-B Beehive 0.5 3.9
For bell of 12” bell and spigot pipe. Since pipe is made under many specifications, there is a wide variation in dimensions. Check the grate size as shown on the drawing to be sure it will fit the pipe you are using.
R-4351-C Beehive Grate Heavy Duty
WEIR
SQ. PERIMETER CATALOG GRATE FT. LINEAL NUMBER TYPE OPEN FEET R-4351-C Beehive 1.2 5.2
DRAINAGE GRATES
R-4351-D Beehive Grate Heavy Duty
7 2
WEIR
SQ. PERIMETER CATALOG GRATE FT. LINEAL NUMBER TYPE OPEN FEET R-4351-D Beehive 1.6 5.8
For bell of 18” tile or concrete bell and spigot pipe. Since pipe is made under manufacturers specifications, there is a wide variation in dimensions. Check the grate size as shown on the drawing to be sure it will fit the pipe you are using.
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