Labels:bulletin board | crt screen | monitor | plant | sky | vegetarianism OCR: Window Energy Comparison energy costs per square foot window per year Window Energy Efficiency Gas SO. 26/m Oil $0.63/ Elect .09/Kwhr Excellent Energy Ratings $0 $0 $0 Compared R-factor for windows that meet A440 -S $3 Normal Good FOI -$3 -$10 R5 +12 to -$5 -$11 -$15 R4 +5 to -15 Fair -30 -$17 -$22 R3 -10 to 30 40 -S10 $23 -$29 R2 -20 to 40 Poor 50 S12 -S28 -$37 R -70 to 06- -65 -S16 -$37 $48 -S19 -S45 $58 vear
