The DORMA 8550 is a floor pivot set (end-load installation) for use with transom door closers and top rails with a minimum 21mm channel depth and 35mm width.
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Side-load installation is achieved by offering the door in the closed position, onto the floor pivot. The closer arm, fitted in the upper door rail, is connected to the spindle and secured with a clamping piece.
• For bottom rails with channel depth of 18–20 mm. • Floor portion of pivot is fitted directly to floor.