These tables give an overview of recommended minimum and maximum secondary glazed unit sizes for our Classic and Forte ranges. For detailed information, including glazing for larger than recommended sizes, refer to our minimum and maximum size guide download.
See the specific product page, in the products dropdown menu, or email details of your query. You’ll find the glass weight calculation formula here.
If your window is larger than the recommended sizes in the Classic table, consider combining units or the Forte range, created for larger windows.