5 key benchmarks for effective window material evaluation
The National Fenestration Rating Council, a nonprofit organization serving window, door and skylight manufacturers, lists 642 window manufacturers. Just sorting through window material options from those window makers can be a challenge. For starters, there are vinyl, vinyl composites and more recently fiberglass composite window materials. To underscore the growth, the indispensable bible for construction estimators, the 2018 MasterFormat, now includes an all-new division dedicated to composite window materials.
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