Product is solid and all fittings and fixings are of a pretty good standard. Instructions leave a lot to be desired but a competent installer will overcome this quickly - be careful which way around you put the wall channels, the instructions draw them a different way around each time which is confusing. The product can be installed either way around - you just need to reverse a few things and be careful with things like which way around the handle and rollers go. Door rolls smoothly once the fine tuning has been done with the rollers (this is not mentioned in the instructions). Overall a good product and should stand the test of time if installed correctly.