Hi Ruth, With respect, even when and upright is against a wall back covers improve the response of DamppChaser systems. That might not be so in a more forgiving climate. But where I live is not forgiving *at all*. (4% to 84% yearly) At 07:37 PM 26/08/2004 -0400, you wrote: >The cover is most important in cases of air flow. Uprights with their backs to >the wall don't generally need this kind of treatment if sufficient wattage is >used. Ruth Phillips Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. mailto:pianotuna@accesscomm.ca http://us.geocities.com/drpt1948/ 3004 Grant Rd. REGINA, SK S4S 5G7 306-352-3620 or 1-888-29t-uner
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