...it is an option and if used properly it does look good/works well....the down side is that it will weather-gain water entrance and when freezing, the water will expand and will increase the opening size with every cycle....just like concrete on the roads do in the winter. if the edges are sealed under lets say a aluminum angle and caulk is used to seal the edges-you are going to have a wall/ceiling unite that will serve you well for years....but not forever-branches/snow and ice along with a number of other hazards with open the panel....requiring repairs immediately. the cost is an issue along with the shipping issue and all the problems with handling...and then the wind issue if you are not in a garage....i have messed around with it in the past and concluded it is easier to work with aluminum sheets......your experience might be different and by all means-please write your experiences on this forum....geofkaye
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