The Crittall Homelight L steel window, an advanced version of the company?s highly successful and established Homelight range is detailed in a new leaflet. The new range has been designed to fully meet the requirements of Part L1 and L2 of the Building Regulations for England and Wales. Homelight L fully complies with the thermal performance demands of Part L of the Building Regulations by offering a U Value of 2.2W/m2K. The window incorporates 4/16/4mm glazing comprising a 4mm clear Weatherstripping is incorporated as standard.