Vents and Louvers (cont.)
Heater closet door vents, louver [view picture]
    70 square inches, louvers only SW@.220 Ea 6.17 9.11 15.28
    70 square inches, louvers and screen SW@.255 Ea 11.40 10.60 22.00
    38 square inches, louvers only SW@.190 Ea 5.99 7.87 13.86
    38 square inches, louvers and screen SW@.210 Ea 9.07 8.69 17.76
Circular louver vents, for moisture control in sidewalls, aluminum mill finish
    2" circular vent SW@.255 Ea 1.50 10.60 12.10
    3" circular vent SW@.255 Ea 3.05 10.60 13.65
    4" circular vent SW@.255 Ea 2.75 10.60 13.35
Rafter eve vents, galvanized steel with nailing flange, 1/8" mesh, galvanized, louver
    14" x 5" SW@.220 Ea 4.22 9.11 13.33
    14" x 6" SW@.220 Ea 5.21 9.11 14.32
    22" x 3" SW@.220 Ea 4.11 9.11 13.22
    22" x 6" SW@.220 Ea 5.41 9.11 14.52
    22" x 7" SW@.220 Ea 5.42 9.11 14.53
Rafter bay vent channel, keeps attic insulation away from vents, promotes circulation.
    Rafters 16" on center, 14" wide, 15" net-free vent area BC@.220 Ea 1.95 8.09 10.04
    Rafters 24" on center, 22" wide, 26" net-free vent area BC@.220 Ea 2.60 8.09 10.69
Ridge ventilators, 1/8" louver opening, double baffle, aluminum [view picture]
    10' long, black BC@.650 Ea 18.60 23.90 42.50
    10' long, brown BC@.650 Ea 17.60 23.90 41.50
    10' long, white BC@.650 Ea 17.60 23.90 41.50
    4' long, hinged for steep roof BC@.255 Ea 11.30 9.38 20.68
    Joint strap BC@.010 LF 1.86 .37 2.23
    End connector plug BC@.010 Ea 2.27 .37 2.64
Roof vents, with mesh screen, for roof venting of kitchen and bath exhaust fans
    Square cap type, 26" L x 23" D x 5" H SW@.448 Ea 54.30 18.50 72.80
    Dormer type, 20" L x 10" D x 6" H SW@.448 Ea 35.80 18.50 54.30
Rotary roof ventilators, with base, by turbine diameter [view picture]
    12", galvanized SW@.694 Ea 29.10 28.70 57.80
    12", brown SW@.694 Ea 37.50 28.70 66.20
    14", galvanized SW@.694 Ea 45.50 28.70 74.20
    14", brown SW@.694 Ea 39.20 28.70 67.90
    16", galvanized SW@.930 Ea 112.00 38.28 150.28
    18", galvanized SW@1.21 Ea 130.00 50.10 180.10
Round louver vents, 1/8" mesh, galvanized
    12" or 14" diameter SW@.440 Ea 47.00 18.20 65.20
    16" diameter SW@.440 Ea 54.00 18.20 72.20
    18" diameter SW@.440 Ea 59.60 18.20 77.80
    24" diameter SW@.661 Ea 107.00 27.40 134.40
Soffit vents, aluminum louvers, 8' long, reversible
    2-5/8" wide, white finish SW@.440 Ea 4.96 18.20 23.16
    2-5/8" wide, mill finish SW@.440 Ea 3.31 18.20 21.51
Under eave soffit vents, screen type
    4" or 8" x 16" B1@.500 Ea 9.59 16.70 26.29
Continuous aluminum soffit vents
    2" x 8' B1@.050 LF .71 1.67 2.38

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