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3000 Manhole Scrubber
REQUIRED MEASUREMENTS:
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A: Manhole Frame Diameter (flat bearing surface)
B: Inside Frame Diameter (clear opening)
C: Drop Ring Diameter
D: Drop Ring Depth (from cover underside, outside edge)
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REQUIRED MEASUREMENTS:
​
A: Manhole Frame Diameter (flat bearing surface)
B: Inside Frame Diameter (clear opening)
C: Drop Ring Diameter
D: Drop Ring Depth (from cover underside, outside edge)