Does Great Lakes Window insulate their frames?
The vinyl mainframes and sash of our Grandview 5000 vinyl windows are filled with patented R-Core (pre-expanded high-density solid-polyurethane insulation), the same type used in many refrigerator/freezer doors. It prevents voids and settling and results in even distribution of the maximum insulating barrier.
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You’re currently reading “Does Great Lakes Window insulate their frames?,” an entry on HomePro Window & Door: Q & A
- Published:
- 05.01.08 / 9am
- Category:
- general info
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