The frames prices were cost to the trade direct from the manufacturer, so you could add upto 25% on top of the frames price if you buy through a window company. As this is going to be a fairly sizeable opening into a largish room 40m2 that catches a lot of sun, I wanted to make sure that we had minimal solar gain in summer and maximum insulation to prevent heat loss in winter. The glass was Saint Gobain 6mm Securit C-Lite and I was wrong on the pricing, I just rechecked my invoice, £1k was my total glass bill, the glazing on the doors was £400. So my bill was £3400 for the doors fitted, which was over a grand cheaper than the mainstream window companies were quoting.
