During the recent cold winter I began to worry that I would run out of propane and be forced to refill my tank at over $5 per gallon. The cost to fill my tank would be around $2,000 dollars. I decided to do everything in my power to stretch out my propane supply so that I could by it in June at under $2 per gallon. These window covers are part of the solution. Double pane windows have an R-value of only 2. Covering the windows has really cut down on heat lost. The foam board covers increas

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