"The build quality of this window is very good indeed and it is a perfect replacement for the window that was needing to be changed at my house. It has all the features I require i.e. one side opening panel and a smaller top opening panel on the other side. Cockspur locks are included on the openers which is an added bonus for security. The only downside is that the unit is delivered fully glazed making using frame fixers somewhat difficult when installing it (also making it rather heavy to handle and requires 2 people if fitted with the glazing still installed). Overall though, this is an excellent replacement window and I would definitely recommend it to others."