Purchased 2 models for our front bedrooms as we've been on a noisy major road. Installed them yesterday and the real difference in noise is incredible. I went for that 6.4mm laminated glass and positioned the units within the entrance on the window sill to provide maximum hole. “I am https://portraitphotography01234.bloggerbags.com/31994591/the-retrofit-double-glazing-in-london-sw3-diaries