All Openings Include:
- Door, frame, seal
- Gravity Glide™ cam-lift hinges
- L-Frame™ Door Bottom
- Threshold
- Prime painting
- Crating for shipment
- 14 Ga. continuous welded frame
- 16 Ga. continuous welded door
- 1-1/2 Hour UL fire rating
- Vision panels with factory acoustical glazing
- Pairs with double acoustical astragals
- Oversized swinging sound doors & frames up to STC 53
- Stainless steel available on all models
The complete sound retardant door system should be provided by the same manufacturer and designed as an integrated assembly. Sound control doors are designed and tested as complete assemblies including door, frame and perimeter seal systems. Depending on the STC requirements for the project, the manufacturer may also include proprietary hinges and thresholds in the system. Operating hardware such as locksets, exit devices, closers and etc. is normally furnished under a separate specification entitled "Finish Hardware."
Coordinate the "Acoustical Doors and Frames" section of the Specification with the "Hardware" section to avoid duplication of products. Specify hardware that will function properly without compromise to the acoustic performance. Security Acoustics can be of assistance in this.
The selection of the type of perimeter seals will be determined by the manufacturer based on the STC requirements specified by the project designer or acoustical consultant. Perimeter seal design may vary with the requirement or special use and considerations particular to the project. When possible, consult with the manufacturer during the design phase to avoid complications.
All sound control door designs should be tested in accordance with the most recent version of ASTM E90 which has, over the years, been upgraded several times and become increasingly stringent since its first adoption over 40 years ago as E90-50T. The improvements in this Standard are a result of the use of more sophisticated electronic measuring equipment resulting in sharply improved levels of confidence in that equipment, changes in methodology, technique and procedures, as well as tighter performance standards for testing laboratories.
Sound control doors are much heavier than conventional doors. The associated frames are built to help support the additional weight, however, an integral part of that support system should include the use of a minimum of 3 extra heavy ball bearing or cam-lift type hinges as required by the applicable STC rating.
Glass windows in a door, known as vision lites, can reduce the overall effectiveness of an acoustic door. Consult with Security Acoustics regarding the procedures to be followed. Additionally, there are stringent requirements relative to fire rating.
NCAC: National Council Of Acoustical Consultants
Since the controlled laboratory environment does not reflect the realities of field conditions and construction practices, it is essential that the specifier make the General Contractor and associated building trades aware of the need to maintain acoustical integrity. Penetrations into partitions should be minimized and flanking paths must be avoided. The effectiveness of well designed acoustical walls can be destroyed by relatively small openings. Filling the cavity behind the frame helps minimize the sound flanking of the opening. A poorly installed unit will certainly compromise acoustical performance; a fact that must not be underestimated.
Gravity Glide™ Hinges - also known as "Cam-lift" type hinges, they use the door's own weight to provide a positive seal between the door bottom and threshold when the door is closed. These unique hinges gently lift the door when opened. Smooth easy door operation is maintained, while positively sealing out sound transmission at the door bottom. They are available in standard cast or optional polished finish.
Sound Tight™ Compression Seal - seals are a vital ingredient in the effectiveness of a sound reduction door. Our Sound Tight™ one piece continuous seals are designed to virtually "lock out" sound. The unique design allows the door to operate smoothly, close normally and utilize standard builders hardware.
Double Astragal - pairs of acoustical doors have traditionally challenged the best of door designs. With our revolutionary double astragal seal, this problem area has finally been tamed. Now you can expect superior acoustical performance from pairs without the space reduction and complication of mullions.
L-Frame™ Door Bottom - this revolutionary yet simple design works in conjunction with our Sound Tight™ seals and Gravity Glide™ hinges to stop sound transmission at the door bottom. There are no moving parts to wear out, break or bind. Once initially adjusted, no further maintenance is required.
Mortised Automatic Door Bottom - for less stringent STC requirements, or application where Gravity Glide™ hinges are not used, automatic door bottoms provide an attractive option.
Security Metal Products Corp.
5700 Hannum Avenue, Suite 250
Culver City, CA 90230
Tel: (310) 641-6690
Fax: (310) 641-6601
E-mail: Hschrier@secmet.com
Web site: http://www.secmet.com
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