1710 ROOF ACCESSORIES |
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| 1720 | ||||||
| 1750 | 1760 | 1770 | 1785/1786/1787 | |||
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EXPANSION JOINT FUNCTION: Used with all types of vertical drainage conductors, leaders, stacks, vent or soil lines, where contraction and expansion movements must be compensated for to prevent rupturing of lines and damage to the building construction. |
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