https://www.openlearning.com/u..../spencewalsh-slh49p/
Types of Double Glazed Windows Handles UPVC window handles are an essential component of the double glazing process. They are used to control the locking of the window and ensure it seals properly, helping to improve the efficiency of energy. Window handles from Espag come with a spindle that is 7mm square that is placed into the frame and is engaged by the multi-point locking system. Both inline and cranked versions are available that can be turned right or left. Espag T
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