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Upvc Vertical Sliding Secondary Glazing System

You need one width kit plus one height kit of the appropriate lengths to secondary glaze your window with two sliding panes.


Do not buy the glazing material until you have installed the outer tracks and have taken the required measurements from them. This system had been designed to accept 4mm glass or acrylic sheet. 4mm glass generally gives the better result, but if your window is close to the floor or otherwise exposed to impact, we recommend that you use acrylic or similar material instead of glass for safety reasons. No single pane should exceed 12 sq feet in area - check metric


The uPVC Vertical Sliding System may be fitted:

1. To the inside of the wooden recess
2. Directly to the flat wooden face of the window surround
In each case allow a minimum of 42mm of the flat surface to accept the secondary glazing tracks.
Face fitting may not be possible if:

1. The main window does not have a wooden frame or surround
2. The main window catches do not clear the secondary glazing panes, and cannot be replaced by smaller fittings, or otherwise adapted.

Also it may not be desirable if the best sound insulation is required. A gap of 150mm between the main window glass and the secondary glazing is recommended for this.

For the best thermal insulation, and for normal sound insulation purposes, fit the secondary glazing as close as possible to the existing window. Ensure that the main window catches clear the secondary glazing.

When recess fitting to brick, concrete, plaster etc., mark the position for drilling the holes through the screwholes shown in Figure 1. Then drill the holes deep enough to take the plastic wall plugs, to ensure a rigid fixing.

 UPVC vertical sash width 610mm 
 UPVC vertical sash width 610mm 
 Per Pack 
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 UPVC vertical sash width 915mm 
 UPVC vertical sash width 915mm 
 Per Pack 
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 UPVC vertical sash width 1220mm 
 UPVC vertical sash width 1220mm 
 Per Pack 
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 UPVC vertical sash height 1220mm 
 UPVC vertical sash height 1220mm 
 Per Pack 
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 UPVC vertical sash height 1829mm 
 UPVC vertical sash height 1829mm 
 Per Pack 
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 UPVC vertical sash height 2438mm 
 UPVC vertical sash height 2438mm 
 Per Pack 
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01.UPVC vertical sash height 2438mm
02.UPVC vertical sash width 1220mm
Plastics Fabrication
Plastics Fabrication
We offer bespoke fabrication on all items on this site. Simply send a diagram with sizes to and we will be happy to quote.
Free cut to size
Free cut to size
We offer a free cutting service on all our sheet products above 1.9mm. Simply order a suitable sheet and specify the cut sizes in the comments section of the checkout