![](http://crystal-direct.co.uk/wp-content/uploads/2016/12/benefit_1.png)
Warranty
Crystal's PVC-U windows come with a 10 year manufacturer's warranty
![](http://crystal-direct.co.uk/wp-content/uploads/2017/05/benefit_2.png)
Energy efficiency
Multi-chambered frames and thermal inserts for excellent thermal efficiency
![](http://crystal-direct.co.uk/wp-content/uploads/2017/05/benefit_4.png)
Security
The latest high-performance multi-point locking technology installed as standard
![](http://crystal-direct.co.uk/wp-content/uploads/2017/05/benefit_3.png)
Quality
Windows are manufactured to the highest quality standards, fully accredited and UKCA Marked
![](http://crystal-direct.co.uk/wp-content/uploads/2017/05/benefit_5.png)
Recycling
End of life PVC-U products are given a new lease of life via recycling