R-3497-A
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| Description | A | AA | B | C | E | F | Lid/Grate Material |
|---|---|---|---|---|---|---|---|
| Airport Manhole Frame, Lid | 31-1/2 x 19-1/2 | N/A | 1-1/2 | 30 x 18 | 36 x 24 | 4 | Gray Iron |
| All dimensions are listed in inches unless otherwise noted. | |||||||
- For built-up manhole construction
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