Interestingly, Integral Sealed Unit blinds are treated as a decorative item such as Georgian bar of lead work is. As such it does not have to be tested. However, assessments carried out point to Integral Blinds playing a positive role by reducing heat loss and solar gain still further depending on whether the blinds are opened or closed. The actual integral blinds frame comes as either aluminium or UVPC depending on whether you require warm edge technology used in manufacture of sealed units that comprise the interstitial blinds. The size of the lamellas available to chose from can vary depending on the size of the construction, so sometimes, there may not be a huge choice on the sizes. But, generally speaking, we can do 20mm, 22mm, 27mm, 29mm and 32mm, which are available in several colours.