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Bob from SWISCO responded:
June 7, 2019
The mounting holes on the 26-226 are made of a die-cast metal that the screw will thread on its own during installation. As far as the specific screw, many customers have installed these using our 33-055 screw, but your screw may be a different length. That depends more on the window than the pivot bar. If you have your original screws, those should work fine. |
