SR Acoustical & Acoustical FD 1⁄3 Hour Door
UNDERWRITERS LABORATORIES, INC.
FD 1/3 HOUR FIRE DOOR APPROVAL (STC 28 and STC 43)
MAXIMUM OPENING SIZE | Singles: 4'0" x 8'0" (1220 x 2440mm). |
| Pairs: 8'0" x 8'0" (2440 x 2440mm). |
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FACES | All domestic and imported wood species. |
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STILES (VERTICAL EDGES) | 47⁄8" (124 mm) hardwood stiles veneer banded |
| to match face species. |
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MAXIMUM WOOD BEADED LITE | Not allowed. |
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MAXIMUM METAL VISION PANEL | Not allowed. |
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HINGES* | Ball bearing steel, full mortise, half |
Note: Per NFPA 80 some specialty | surface, or full surface. Minimum size 41⁄2" x |
hinges allowed. Contact Algoma for | .134" (114 x 3.4mm) . |
information. |
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LOCKSETS* | Listed mortise locks, unit locks, and cylindrical |
| locks or hospital |
| (95mm) backset. |
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CLOSERS* | Listed surface mounted closures. |
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FIRE EXIT HARDWARE* | Mortise or rim type devices |
Door Bottoms: | Doors are supplied with concealed type |
| automatic drop seal. |
Maximum trim: | Doors should be ordered factory prefit for |
| height since the bottom is grooved for drop |
| seal. |
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Prefit: | Standard undercut on STC 39, 43, and 45 will |
| receive a 7/16" undercut to accommodate the 1/4" |
| high threshhold. Undercut can be adjusted if |
| floor conditions warrant. |
Sound Transmission Loss Ratings and Door Weight*
ACOUSTICAL DOOR ACCESSORIES
ACOUSTICAL DOOR
GASKETING
(Two Per Side)
Supplied With Door
Hinge Jamb | Strike Jamb |
| (Head(HeadSimilar)i al |
ACOUSTICAL LITE
STC 39 (No Fire Rating)
Glass Factory Installed
1"
1/4" 
1/8"
13⁄4"
ACOUSTICAL DOOR AUTOMATIC DOOR BOTTOM
(supplied with door)
Aluminum with neoprene insert 3/4" (19mm) maximum drop
7/8"
225N Bottom Seal (NGP) |
896S THRESHOLD (NGP)
(Supplied with STC 39, STC 43 and STC 45
1/2"
1/4"
5"
Type of | Sound Transmission | Transmission loss at various frequencies (Hertz) |
| Door weight* | |||||
installation | Class (STC) | 125 | 250 | 500 | 1000 | 2000 | 4000 | lbs/sq ft | kg/M2 |
Single door (with lite opening) | 39 | 26 | 31 | 38 | 41 | 40 | 44 | 6.5 | 31.7 |
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Single door | 40 | 24 | 38 | 40 | 43 | 40 | 41 | 6.4 | 31.3 |
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Single door 20 minute label | 43 | 24 | 35 | 42 | 44 | 45 | 50 | 7.1 | 34.7 |
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Single door with threshold | 45 | 26 | 39 | 42 | 44 | 48 | 51 | 6.4 | 31.3 |
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Two STC 40 as communicating doors | 54 | 36 | 47 | 50 | 55 | 57 | 59 | 6.4 | 31.3 |
* Door size and weight should be considered when determining hardware requirements.
The maximum benefit of acoustical doors is obtained from openings with uniform door/frame edge clearance, correct positioning of gasketing, and proper adjustment of the automatic bottom seal.
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| 1001 Perry Street • Algoma, Wisconsin 54201 |
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8/10/08 |
| 920.487.5221 • 1.800.678.8910 • FAX 920.487.3636 | Door 44 |
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| www.algomahardwoods.com • sales@algomahardwoods.com |
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