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Air Distribution System <br /> Ducts may be 1" thick fiberglass, class II., minimum <br /> density of 2.5 lbs. per cubic foot. <br /> Ur, galvanized sheet metal insulated with 2" thick <br /> flexible insulation with vapor barrier - .75 lbs. <br /> per cubic foot density. <br /> All joints shall be scaled against vapor penetration. <br /> Opposed blade dampers shall be installed behind all supply <br /> grilles for balancing. <br /> Air Conditioning System <br /> Shall include all materials and labor including electri- <br /> cal wiring to have a complete operating system. Con - <br /> tractor shall balance system upon completion of install- <br /> ation. Contractor to service system including parts <br /> and labor free of charge for one year after final com- <br /> pletion and acceptance by the city. The compressor. <br /> are to have an additional Lt year warranty. <br /> Contractor shall guarantee system to maintain indoor <br /> temperatures and humidity at outdoor design conditions. <br /> 6 of 6 Sheets <br />