As many reviews say, the fitting of these bifolds is pretty easy with two people and the occasional extra help from me to hold things in place. The bifolds (I purchased 2.7m and 1.8m plus a window which isn't fitted yet) were very well made. Plus the delivery people were great and the bifolds came within a few days as advertised (the window was a few weeks later but it was clearly communicated that this would be the delivery time prior to purchase). However, a few points to be aware of - the frames are very tight to the margin the company says. For example, the 1.8m (1800), says allow 1800 for the opening and the frame is 1790. Our bottom frame piece was 1796 so very close to the tolerance. Extra brick shaving was required! Plus one of the keys was broken on receipt (this was the only damage) - which we only noticed when we took it out at the end to close the door for the first time. Initially, I was told by customer service that I need to purchase a new one from their supplier, however, in a subsequent conversation the issue was resolved amicably and a new key is now on its way. Finally, to help with decision-making on which product is best for you, it isn't clear in the description but you cannot open the 1.8m bifolds from the outside, only inside. So if you are in the garden and someone closes them inside to keep the warmth in, you cannot get back in as there is no external door furniture. Something to think about if these are to be your main doors into the garden. All in all, a generally good product and looks very smart but I would have chosen a different product instead of the 1.8m bifolds if I had realised you couldn't get in from outside. The 2.7m has a separate door so these work well and we have had no problem with this one at all (all fittings correct, installation easy and well made). Will review the window separately when it is fitted!