Mounting Set B / Item No. 813

Measure the depth of the frame where you plan to mount the electrc window opener. If this frame depth is 0mm-50mm, then 813 mounting set will be needed in order to install the window opener. Over 50mm and you do not need this set. If the window frame where the opener will be mounted has an angled surface, then please study the 813 mounting instruction before purchasing in order to decide if you are able to mount the opener in a suitable way.