Basic differences between all of our product lines
Profile Line U-Value R-Value Main Characteristic SWD A5 0.28Btu 3.58 Double weather seal See detail SWD M5 0.27Btu 3.70 Triple weather seal See detail SWD 88+ 0.21Btu 4.76 Great energy performance with thick frame See detail SWD Passive House 0.16Btu 6.25 SWD 88+ with foam insulation for even better energy performance See detail SWD Aluskin 0.21Btu 4.76 Aluminum skin on the exterior of the window See detail all numbers are with double pane glazing
Sample windows and doors prices for each profile line for quick comparison.
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