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Show SMART TRICK 4 : i . ? ' J IT -I - ; h' - I 51 I j "n 1 k I , f ' -5 1 L - '- . .M J Pulling down the window shade is a real accomplishment for Toby and it's a smart trick for anyone who wants to save heat and fuel. The dead air space between shade and pane acts as an insulator, reduces by 40 or 50 per cent the important heat loss through the glass. The fuel saving is as much as 10, if shades are drawn to the sill in all rooms at night and in unoccupied unoc-cupied rooms during the day. |