Measure each and every manhole for which you are ordering inserts, unless you are absolutely sure of dimensions. Your order will be produced to your supplied dimensions. Errors in instructions received from you may result in unusable inserts for you. --If you have any questions concerning the insert dimensions please call: (800) 442-7575.

1. Manhole Frame Diameter (flat bearing surface)

2. Inside Frame Diameter (clear opening)

3. Drop Ring Diameter

4. Drop Ring Depth (from cover underside, outside edge)

DIMENSION 'A' DETERMINES MODEL SIZE TO ORDER

Please enter dimensions as decimals (i.e., 22 1/2 would be entered as 22.5)
Dimension B will be smaller than Dimension A, Dimension C will be smaller than Dimension B and Dimension D cannot have a depth greater than 4 inches.

TI21*

21"-25"+

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TI26*

26"-31"+

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TI32**

32"-40"

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