Note: These values are for the middle of glass only. They should only be utilized to check the impact of different glazing forms, not to check total window goods. Body alternative can greatly impact functionality. These values represent double glazing which has a 1/2″ air hole. For facts on the https://buy-secondary-glazing56665.popup-blog.com/33774182/an-unbiased-view-of-secondary-glazing-windows