LINKTRUSION Key Features Immensely strong, glass fibre pultruded technology Optional patented thermal reinforcement Recycled uPVC Excellent U-Values Embedded steel wires in a low-density insulating foam core Category: WindowsPost navigationPreviousPrevious post:Christmas at Mr WindowRelated postsChristmas at Mr WindowNovember 21, 2018Windows & DoorsOctober 6, 2017Tilt & Turn WindowsApril 15, 2013Sliding Sash – Vertical SlidersApril 11, 2013Bay WindowsMarch 27, 2013Casement WindowsMarch 20, 2013