Document jme8915DwbR8XBXnExM5pognk

- M PLAINTIFF'S EXHIBIT KN-398 BALOWIN-HILL COMPANY, TRENTON $, NEW JERSEY SPfcCJWGATlONfl SOR INSULATION Of DUCT SYSTEM 1, All air ducts noted on drawings shell be Insulated with 8pua Mineral Wool Hoot In* tutotlon, ae manufactured by Baldwin*HU1 Company, or approved equal, la thickness specified on drawings' Preparation of Surface * Remove all loose rest, scale or dirt from surface of Duet so that nothing will lntsrfare with the application of iho pins, dips, screws or adhesive, 2* Type of Duct Insulation to bo oeed * (Cross off all hut desired on*) to) - Plain 00 Vapor-Barrier to) uo Foil-Faced (Non-Combustible or Vapor-Barrier) to) m Coated .4 Methode of Attachment * (Cross out oil but desired method) (a) Graham WtMIng Pins or Mechanical Clips applied with recommended adheaive, applied to under surfaces of horlsontai runs asd all four sides of vertical duels, with a minimum of om fastener per 2 square fust of aurtooe. BenJamin*Foater 81*81, 81-71, or equal adhesive, to he applied to other three tides of horlsontai rune. Adhesive to b applied in 4" wide strips at ono foot Intervals, and then ridged slightly by uetng e serrated trowel. Duct Insulation to he out in widths and lengths to suit tho cross*sectional dlmenetons of each duet, with the top and botlom piccea overlapping the aide pieces. (Cut overniuo to Insure tight fit). Apply the bottom piece first by Impaling It on the pine or dips, end secure with washers, speed nuts or bond tho fastenars to held the laaulatlon In pleco. Apply the aides and then the top, prooaing the material firmly in place to Insure good bond. If Vepor-Bsrrlor Duct Insulation It used, esal all joints with a J" wide vapor bnrrter tape adhered with Benjamin-Foetor 60*24, or oqual. Cover fastener bends with, at least, a J" patch of Benjamin-Foster 64*26,or equal, to pro* vent vapor entry at those points. If Felt-Faced Duct Insulation it ueod, seal ell Joints and cover all fastener hoods with aluminum foil pretsurt*siniitivt tape or approved equal. (b) No, ip or 12 gangs galvanised or stainless steel screws 1/2" longer than the thickness of insulation to be applied. Cepe to be fiber washers or metal -- disks of 1*1/2" diameter) screws to be applied, at least, one per 2 square feet, and should be as near the duct edges as possible for maximum support. Duct Insulation to be out in widths and lengths to suit the erosa sectional di mensions pf tho duct, with the top and bottom pieces overtopping the side pincos. (Cot ovor*sino to insure tight fit). Apply all four itdet with the tctwi and cape, making me each has toktn a firm hold, ' If Vapor-Barrier Duct Insulation is osiil, seal alt Jololi with a J" wide vapor- barrier tape adhered with Benjamin-Fester 64*26 or equal. Cover fastener heads with, at toast, a J" patoh of Uipjornto-Foster 60*16, or *W|r VWHn vont vapor entry at thou points, * 004 vUO If Foil-Faced Duct Ineulatlon It ottd, seal all joints and cover all fastener hewdt with aluminum foil proesure-sensitive tape or approved equal, Detei March l, 1959 ***' July l, 1931 IM Pegei 7A