Marshfield Signature Series® |
Design Options - Louvers |
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| DWF/DWG Drawings - Click link to: |
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| Wood Louvers |
To prevent warping and sagging of the louvers and to increase the security of the installation, Marshfield DoorSystems specially constructs large louvers.
When a single louver cutout is 20" or wider for Flat-Slat or Round-Slat Louvers, or 24" or wider for sight-proof V-Slat, we will install two or more louvers with center mouldings in the cutout. See illustration #1.
For louvers 54" or longer and 20" or wider for Flat-Slat or Round-Slat, or 24" or wider for sight-proof, the louvers are installed as described above and with an additional vertical divider bar. See illustration #2. |
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Illustration # 1 |
Illustration # 2 |
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- Unfinished and primed doors will not have nail holes filled.
- Factory finished doors with installed louvers will have nail holes filled.
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Flat-Slat |
Round-Slat |
Sight-Proof V--Slat |
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Downset may vary due to allowable tolerance deviations in components. |
For nominal louver size of 24" x 12" actual cutout sizes are: 24" x 11-7/8"
Flat Slat, 24" x 11-3/4" Round-Slat, 24" x 12" Sight-Proof V-Slat. |
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| Wood Louver Free Air Chart |
| The following dimensions are square feet of surface area of the louver open for airflow. |
| FLAT SLAT |
WIDTH
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6" |
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12" |
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18" |
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24" |
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30" |
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6" |
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0.05 |
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0.13 |
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0.20 |
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0.27 |
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0.35 |
H |
12" |
0.12 |
0.28 |
0.44 |
0.60 |
0.76 |
E |
18" |
0.19 |
0.43 |
0.68 |
0.93 |
1.18 |
I |
24" |
0.25 |
0.59 |
0.92 |
1.26 |
1.59 |
G |
30" |
0.32 |
0.74 |
1.16 |
1.59 |
2.01 |
H |
36" |
0.38 |
0.89 |
1.40 |
1.91 |
2.42 |
T |
42" |
0.45 |
1.05 |
1.64 |
2.24 |
2.84 |
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48" |
0.51 |
1.20 |
1.88 |
2.57 |
3.26 |
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54" |
0.58 |
1.35 |
2.13 |
2.90 |
3.67 |
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60" |
0.65 |
1.51 |
2.37 |
3.23 |
4.09 |
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| ROUND SLAT |
WIDTH
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6" |
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12" |
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18" |
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24" |
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30" |
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6" |
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0.03 |
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0.08 |
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0.12 |
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0.16 |
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0.21 |
H |
12" |
0.07 |
0.17 |
0.26 |
0.36 |
0.46 |
E |
18" |
0.11 |
0.26 |
0.41 |
0.56 |
0.71 |
I |
24" |
0.15 |
0.35 |
0.55 |
0.75 |
0.96 |
G |
30" |
0.19 |
0.44 |
0.70 |
0.95 |
1.21 |
H |
36" |
0.23 |
0.54 |
0.84 |
1.15 |
1.45 |
T |
42" |
0.27 |
0.63 |
0.99 |
1.35 |
1.70 |
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48" |
0.31 |
0.72 |
1.13 |
1.54 |
1.95 |
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54" |
0.35 |
0.81 |
1.28 |
1.74 |
2.20 |
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60" |
0.39 |
0.90 |
1.42 |
1.94 |
2.45 |
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| SLIGHT PROOF V-SLAT |
WIDTH
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6" |
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12" |
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18" |
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24" |
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30" |
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6" |
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0.04 |
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0.09 |
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0.14 |
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0.19 |
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0.24 |
H |
12" |
0.08 |
0.19 |
0.30 |
0.42 |
0.53 |
E |
18" |
0.13 |
0.30 |
0.47 |
0.64 |
0.81 |
I |
24" |
0.17 |
0.40 |
0.63 |
0.86 |
1.09 |
G |
30" |
0.22 |
0.51 |
0.79 |
1.08 |
1.37 |
H |
36" |
0.26 |
0.61 |
0.96 |
1.31 |
1.65 |
T |
42" |
0.31 |
0.71 |
1.12 |
1.53 |
1.94 |
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48" |
0.35 |
0.82 |
1.28 |
1.75 |
2.22 |
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54" |
0.39 |
0.92 |
1.45 |
1.97 |
2.50 |
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60" |
0.44 |
1.03 |
1.61 |
2.20 |
2.78 |
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| Fusible Link Louvers |
| Underwriters Laboratories (UL) and Intertek Testing Services – Warnock Hersey (ITS-WH) approved fusible link louvers are available for certain Marshfield DoorSystems fire-rated doors. Please see Appendix G and H for specific size restrictions. Labeled doors used as a means of egress are not allowed to have fusible link louvers. Care must be used to avoid overpainting in the field – too much paint can hinder proper operation. |
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View from Corridor Side |
View from Occupancy Side |
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| Note: Marshfield DoorSystems, Inc. doors are manufactured per the standards listed on this page. Specifications are subject to change without notice. |
| Marshfield Signature Series doors meet WDMA premium grade and AWI custom grade standards. |
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800.869.3667 / www.marshfielddoors.com / doors@mdrsys.com
Copyright © 2007 Marshfield DoorSystems, Inc.
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