Page 96 - isodoor katalog 2021-- - ing-son.indd
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SPRINGS

































































                                                                      The springs take the weight

                                                                      of the door.



                                                                      Thanks to the winding spring system,   the
                                                                      weight of the door is transferred to the
                                                                      spring and it helps you to open and close
                                                                      the door manually in case of power failure or
                                                                      malfunction.









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