3 hour fire rating by underwriters laboratories ul and its fire ratings vary with stc rating wood doors available in various species stains and finishes.
Stc rated door assembly.
Personnel metal and wood doors can be manufactured up to 4 0 x 8 0 singles.
Stc ratings for doors.
In 1961 stc was introduced as the method for comparing various wall ceiling floor door and window assemblies.
Wood doors are available with up to 3 4 hour ratings.
Stc is calculated by taking the transmission loss tl values tested at 16 standard frequencies over the range of 125 hz to 4000 hz and plotted on a graph.
Door panels or assemblies with lower ratings are less effective at controlling sound movement and cost less.
However for steel doors there is really no limit.
Adding additional layers of drywall can improve the stc rating of an assembly.
Using the latest sound absorbing techniques and materials republic s engineering professionals have developed a superior sound transmission class stc rated assembly consisting of a noticeably lighter weight door approximately 25 less than current market products along with standard rabbeted hollow metal frames.
Higher acoustical rated assemblies require a custom acoustical frame.
Assa abloy offers a complete range of stc rated door assemblies providing a solution for any application.
8 0 x 8 0 pairs.
Any unsealed gaps and clearances in door assemblies effectively cancel out the noise reduction benefits of stc rated doors.
Tested and certified in accordance with ul 10c and ubc 7 2 for doors and ubc 7 4 for windows.
The higher stc rating usually comes at a higher cost too.
Krieger acoustical doors are delivered as complete performance guaranteed acoustical assemblies with seals hinges and threshold included.
Our designs also interface with the locks and accessory hardware you have chosen for your project.
Seals thresholds and door bottoms when required are shipped with the doors along with the attached stc rating label.
Staggered or double stud walls are higher rated than single stud walls.
When looking for doors that control sound transmission we need.
Stc 35 44 lbs to 45 lbs commercial density core bond to core no lead standard stiles and rails.
We often purchase doors based on aesthetics price and location interior or exterior.
Insulation will noticeably improve the stc rating of an assembly.
Some acoustical assemblies can be used with a standard single or double rabbet frame with welded corners.
Resilient channel can improve the stc rating of an assembly.
Up to 4 0 x 8 0 singles and 8 0 x 8 0 pairs.
Sound transmission class stc rated single door.
Tested in a static inoperable condition to determine the sound transmission through the door.
The first column is the rating of the door panel only.
Additionally cam lift hinges and an aluminum threshold are included with high stc rated assemblies.
