Acoustical Doors

Built for silence

Busy streets, disruptive machines, loud animals — you name it, we’ll silence it. Go above and beyond the natural beauty and draw of wood doors by adding an acoustical element. Measured by laboratory testing of the door per ASTM E-90, the results are reported as STC (Sound Transmission Class) rating, affirming the doors ability to meet specific project requirements.

For sound looks and performance, count on Oshkosh Door Company for your acoustical door needs.

STC ratings available STC 31 through STC 48.

STC Rating Speech Heard Through The Door
25 Normal speech can be heard quite easily
30 Loud speech can be understood, normal speech heard but not understood
35 Loud speech audible but not understandable
41 Beginning of privacy, loud speech audible as a murmer
45 Loud speech barely audible
50 Very loud sounds such as musical instruments faintly heard

All STC ratings below are based on operable unit testing, which is an accurate real-world evaluation of the door’s sound reduction capabilities. For environments requiring higher sound transmission specs, trust Oshkosh Door Company’s experience in acoustical commercial doors.

STC Rating Chart

STC RATING DOOR THICKNESS FIRE RATING OSHKOSH GASKET # GLASS SIZE (sq in) GLASS TYPE TECH DATA PAGE PAIR OPTION MAX SIZE
48 1 3/4 Non-Rated 28 – – GASTC48 – 4-0 x 8-0
48 1 3/4 20 28 – – GASTC48 – 4-0 x 8-0
47 1 3/4 Non-Rated 28 – – GASTC47 – 4-0 x 8-0
47 1 3/4 20 28 – – GASTC47 – 4-0 x 8-0
46 1 3/4 Non-Rated 28 216 5/8 laminated GASTC46 – 4-0 x 8-0
46 1 3/4 20 28 216 7/8 Pyrostop® GASTC46 – 4-0 x 8-0
46 1 3/4 45 28 216 7/8 Pyrostop® GFASTC46 – 3-0 x 7-0
45 1 3/4 Non-Rated 28 216 5/8 laminated GASTC45 – 4-0 x 8-0
45 1 3/4 20 28 216 7/8 Pyrostop® GASTC45 – 4-0 x 8-0
44 1 3/4 Non-Rated 28 216 5/8 laminated GASTC44 – 4-0 x 8-0
44 1 3/4 20 28 216 7/8 Pyrostop® GASTC44 – 4-0 x 8-0
44 1 3/4 45 28 484 7/8 Pyrostop® GFASTC44 – 3-0 x 7-0
43 1 3/4 Non-Rated 28 484 1/2 laminated GASTC43 – 4-0 x 8-0
43 1 3/4 Non-Rated 30 216 5/8 laminated GASTC43 Yes 8-0 x 8-0
43 1 3/4 20 28 484 7/8 Pyrostop® GASTC43 – 4-0 x 8-0
43 1 3/4 20 30 216 7/8 Pyrostop® GASTC43 Yes 8-0 x 8-0
43 1 3/4 45 28 864 7/8 Pyrostop® GFASTC43 – 3-0 x 7-0
41 1 3/4 Non-Rated 28 216 7/8 Pyrostop® GASTC41 – 4-0 x 8-0
41 1 3/4 20 28 216 7/8 Pyrostop® GASTC41 – 4-0 x 8-0
41 1 3/4 45 28 864 7/8 Pyrostop® GFASTC41 – 3-0 x 7-0
40 1 3/4 Non-Rated 28 864 1/2 laminated GASTC40 – 4-0 x 8-0
40 1 3/4 20 28 864 7/8 Pyrostop® GASTC40 – 4-0 x 8-0
39 1 3/4 Non-Rated 30 216 5/8 laminated GASTC39 Yes 8-0 x 8-0
39 1 3/4 20 30 216 7/8 Pyrostop® GASTC39 Yes 8-0 x 8-0
37 1 3/4 45-60-90 32 484 5/16 ceramic FREMSTC37 – 4-0 x 8-0
36 1 3/4 Non-Rated 28 1296 1/4 laminated GASTC36 – 4-0 x 8-0
36 1 3/4 20 28 484 5/16 ceramic GASTC36 – 4-0 x 8-0
31 1 3/4 Non-Rated 14 720 1/4 tempered GPSTC31 – 4-0 x 8-0
31 1 3/4 20 14 n/a n/a GPSTC31 – 4-0 x 8-0
   
* STC 46 and higher may have longer lead times
* Factory installed glazing is required to ensure acoustic value
* Pairs tested as standard swing only, used in double egress will affect acoustic rating and/or void fire label
* Standard gasket set numbers shown, alternate sets with use of mortise door bottoms also available.  At singles, use 29.  At pairs, use 31.  At fire rated STC37, use 33.