ive only just placed the order, but its worth mentioning how easy the design process is to get the exact window you want without pressure salesmen calling every 5 min to see if you ready to purchase or trying to sell you extras, used another online company before modern upvc and it wasnt untill 4 weeks after the order was placed that i read poor reviews and noticed that the windows where not A rated but C, when that window arrived i had to de burr the drain holes and frames myself and clear the whole unit of swarf, they where also covered in dirt . now clean, ive read the reviews on modern upvc and im convinced i should have used them first , and now they offer free yale upgrade there prices are better too