Greenheck ESK-402 Installation Manual
Stationary Louver
K Blade
Application and Design
ESK-402 is a weather louver designed to protect air intake and
exhaust openings in building exterior walls. Design incorporates
K style blades, sloped sill and high free area to provide maximum
resistance to rain and weather while providing minimum resistance
to airflow. The ESK-402 is an extremely efficient louver with AMCA
LICENSED PERFORMANCE DATA enabling designers to select
and apply with confidence.
Standard Construction
Frame . . . . . . . .Heavy gauge extruded 6063-T5 aluminum,
4 in. x 0.081 in. nominal wall thickness
Blades . . . . . . . .K style, heavy gauge extruded 6063-T5
aluminum, 0.081 in. nominal wall thickness,
positioned at 37º and 45º angles on
approximately 4 in. centers
Construction . . .Mechanically fastened
Birdscreen . . . . .3/4 in. x 0.051 in. fl attened expanded aluminum in
removable frame, inside mount (rear)
Finish . . . . . . . . . Mill
Minimum Size . . 12 in. W x 12 in. H
Maximum Single
Section Size . . . 120 in. W or 120 in. H. (limited to 70 ft. sq.)
ESK-402
WATER
PENETRATION
AIR
PERFORMANCE
AIR
MOVEMENT
AND CONTROL
ASSOCIATION
INTERNATIONAL, INC.
®
Options (at additional cost)
• A variety of bird and insect screens
• Blank off panel
• Clip angles
• Extended sill
• Filter rack
• Flanged frame
• Glazing adaptor
• Hinged frame
• Security bars
• Welded construction
• 0.125 in. nominal wall thickness
• A variety of architectural finishes including:
Clear anodize
Integral color anodize
Baked enamel paint
Kynar paint
*Width and height dimensions furnished
approximately ¼ inch under size.
Free Area Chart (Sq. ft.)
Width in Inches
Height in
Inches
12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
16 0.31 0.51 0.71 0.91 1.11 1.31 1.46 1.66 1.87 2.07 2.27 2.47 2.67 2.87 3.07 3.21 3.41 3.61 3.81
18 0.53 0.87 1.21 1.55 1.89 2.23 2.49 2.83 3.18 3.52 3.86 4.20 4.54 4.88 5.23 5.47 5.81 6.15 6.49
24 0.80 1.32 1.84 2.36 2.87 3.39 3.79 4.31 4.82 5.34 5.86 6.38 6.90 7.42 7.94 8.31 8.83 9.35 9.86
30 1.03 1.70 2.37 3.03 3.70 4.37 4.88 5.54 6.21 6.88 7.55 8.21 8.88 9.55 10.22 10.70 11.36 12.03 12.70
36 1.29 2.13 2.97 3.80 4.64 5.48 6.11 6.95 7.79 8.63 9.46 10.30 11.14 11.98 12.81 13.41 14.25 15.09 15.93
42 1.57 2.60 3.62 4.64 5.66 6.68 7.46 8.48 9.50 10.52 11.54 12.56 13.58 14.61 15.63 16.36 17.38 18.40 19.42
48 1.78 2.94 4.10 5.26 6.41 7.57 8.45 9.61 10.76 11.92 13.08 14.24 15.39 16.55 17.71 18.54 19.70 20.85 22.01
54 2.06 3.40 4.74 6.08 7.42 8.76 9.77 11.11 12.45 13.79 15.13 16.47 17.81 19.14 20.48 21.44 22.78 24.12 25.46
60 2.28 3.75 5.23 6.71 8.18 9.66 10.78 12.25 13.73 15.21 16.68 18.16 19.64 21.11 22.59 23.65 25.12 26.60 28.08
66 2.55 4.21 5.87 7.52 9.18 10.84 12.09 13.75 15.40 17.06 18.72 20.37 22.03 23.69 25.34 26.53 28.18 29.84 31.50
72 2.77 4.56 6.36 8.15 9.95 11.74 13.10 14.90 16.69 18.49 20.28 22.08 23.87 25.67 27.46 28.75 30.54 32.34 34.13
78 3.04 5.02 6.99 8.97 10.94 12.91 14.41 16.39 18.36 20.33 22.31 24.28 26.26 28.23 30.20 31.62 33.59 35.57 37.54
84 3.26 5.38 7.50 9.61 11.73 13.84 15.45 17.57 19.68 21.80 23.91 26.03 28.15 30.26 32.38 33.90 36.01 38.13 40.25
90 3.53 5.83 8.12 10.41 12.70 15.00 16.73 19.03 21.32 23.61 25.90 28.20 30.49 32.78 35.07 36.72 39.01 41.30 43.59
96 3.99 6.58 9.17 11.76 14.34 16.93 18.90 21.48 24.07 26.66 29.25 31.84 34.43 37.02 39.60 41.46 44.05 46.64 49.22
102 4.03 6.64 9.25 11.86 14.47 17.08 19.06 21.67 24.29 26.90 29.51 32.12 34.73 37.34 39.95 41.82 44.44 47.05 49.66
108 4.31 7.10 9.90 12.69 15.49 18.28 20.40 23.20 25.99 28.79 31.58 34.38 37.17 39.97 42.76 44.76 47.56 50.35 53.15
114 4.52 7.45 10.38 13.31 16.25 19.18 21.40 24.33 27.26 30.20 33.13 36.06 38.99 41.92 44.85 46.96 49.89 52.82 55.75
120 4.80 7.91 11.02 14.13 17.25 20.36 22.72 25.83 28.94 32.06 35.17 38.28 41.39 44.50 47.62 49.85 52.96 56.07 59.18
ESK-402PERFORMANCE DATA
Stationary Louver K Blade
Extruded Aluminum
Greenheck
Fan
Corporation
certifies that
WATER
PENETRATION
PERFORMANCE
AIR
MOVEMENT
AND CONTROL
ASSOCIATION
INTERNATIONAL, INC.
bear the AMCA Seal. The
ratings shown are based
on tests and procedures
performed in accordance
with AMCA Publication
511 and comply with
the requirements of the
AMCA Certified Ratings
Program. The AMCA
Certified Ratings Seal
applies to air performance
and water penetration
ratings.
AIR
®
the ESK402 louvers
shown
herein are
licensed to
Airflow Resistance (Standard Air - .075 lb/ft
Pa
in. wg
1
0.9
200
100
90
80
70
60
50
40
30
20
Static Pressure Drop
10
9
8
7
6
5
ft/min
m/s
Test Size 48 in. x 48 in.
0.8
Standard Air - .075 lb/ft
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
200200 300 400 500 600 700 800 900 1000 2000 3000
3
Exhaust
Intake
2345678910
3
) Water Penetration (Standard Air - .075 lb/ft3)
Free Air Velocity
Model ESK-402 resistance to airflow (pressure drop) varies
depending on louver application (air intake or air exhaust).
Free area velocities (shown) are higher than average
velocity through the overall louver size. See louver selection
information.
Test size 48 in. x 48 in. Test duration of 15 min.
ml/m2 oz/ft2
Water Penetration per Unit Free Area
0.30
Test Size 48 in. x 48 in.
80
60
40
20
0
ft/min:
m/s:
Test Period 15 minutes
0.25
Standard Air - .075 lb/ft
0.20
0.15
0.10
0.05
0.00
600 650 700 750 800
3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0
3
Free Area Velocity
The AMCA Water Penetration Test provides a method for comparing
various louver models and designs as to their efficiency in resisting
the penetration of rainfall under specific laboratory test conditions. The
beginning point of water penetration is defined as that velocity where the
water penetration curve projects through .01 oz. of water (penetration)
per sq. ft. of louver free area.
penetration for Model ESK-402 is 689 fpm free area velocity.
The beginning point of water
*
These perfor mance ratings do not guarantee a louver to be weather proof
or stormproof and should be used in combination with other factors
including good engineering judgement in selecting louvers.
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