However, there may also be times when the saying “you get what you pay for” applies. Truth is, there is no general rule about this. The more important thing to remember is to examine each UPVC sash window before purchasing it.
The nine-chambered profile and 44mm triple glazing enables the window to achieve one of the best energy ratings around. This means that the Residence 9 window to not only look great, it has great thermal efficiency as well.
See more about aluminium windows at https://www.doubleglazing-pro.co.uk/aluminium-windows-doors/