The number of chambers is not only important value to follow
The outer wall of the uPVC profiles is usually 2.8-3 mm thick, with the inner cavity of the profile divided by partitions into several chambers. Usually, more chambers mean better thermal insulation properties.
Windows are a problem, they attract your child by offering an awesome view of all the amazing things going on outside the house. With all the excitement of the outside, your little one may very well be putting its life in danger.
Side entry doors can be use for the side entrance to the house, the entrance to the garden, terrace or into the garage. It also serves as the common front door.