Windows Posted by TRAdmin in 11 Nov 2015 A constant flow of fresh air and natural light is essential for creating an effective learning environment. Modern windows providing natural ventilation and double glazing are an extremely cost effective and economic solution. Add to wish list Categories: All Equipment, School Grounds Related products Security Barriers Add to wish list Modular Buildings Add to wish list Interior / Exterior Doors Add to wish list Lawn Mower Add to wish list