The brief here was simple. Keep it simple. Not to to detract from the impressive existing house and garden. Low iron glass was used to enhance the clarity and the result was amazing. It appears that the whole structure is held together with 12 bolts! The two central Maxlight doors have their draft proof interlockers completely concealed behind the triple laminated glass columns. The track at the base is totally flush, whilst the head track is almost hidden behind the spacers bars. Warm in the Winter, Cool all the year round.