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FEBRUARY JLC 2000 Products JLC's Products by Dave Holbrook Noise-Control Batts The survey results are in: 12 out of 13 people don't want to hear any sounds coming from the bathroom. Ignoring that thirteenth character, perforated white NoiseReducer batts offer improved acoustical absorption when used to fill interior stud bays. The manufacturer claims the kraft-faced, 31/2- inch-thick batts add 4 to 12 points to the sound transmission class rating of the wall assembly. (Plan on using thermally- rated insulation in exterior walls.) The batts come in 15- and 23-inch widths at a cost of about 16¢ per square foot. Contact: CertainTeed Corp., Valley Forge, PA; 800/233-8990; fax 610/341-7571; Emergency Power Panel We may have put the fear of Y2K behind us, but there are still weather- and accident-related