Tom from SWISCO responded:
June 27, 2016
Thank you for posting. Most Weathershield sliding patio doors used two types of rollers. If the door has the adjusting screw on the bottom face of the door behind a nylon bottom cover, we recommend our 81-018 or the stainless steel option, 81-149. If you adjust the door on the bottom side of the door, consider our 81-087 instead.
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