Model 439388 Metal Door - Acoustical
Perimeter Seal: Single Magnetic Gasket
Bottom Seal: Super "H" Door Bottom
Door Thickness: 1.875" / 47.625mm
Min Frame Depth: 4.75" / 120.65mm
Max Leaf Size: 48" x 96"
STC Rating: 43
Max Fire Rating: 1-1/2 hr
Isolated Edge Construction
This door uses an Isolated Edge construction, which separates the two outer door skins from each other. A strip of neoprene is installed between the two door skins, reducing the amount of sound transmission through the actual steel faces. The seal is notched between the hinge and lock cutouts and does not interfere with hardware cuts.
Single Magnetic Perimeter Seals
This door is equipped with a single Magnetic door sealing system. It consists of a single magnetic perimeter seal. Magnetic seals allow the use of a wide range of electrical hardware, such as electric locks and strikes. Due to their zero preload against the door leaf, the sensitive electronics are not compromised.
Super "H" Door Bottom
Overly's super "H" door bottom is the only choice for unbeatable sound control. Always used in conjunction with our cam-lift hinges, this door bottom compresses tightly against the floor. We recommend smooth level sealing surfaces for this door bottom. Uneven or abrasive flooring may prematurely wear the door bottom. A smooth raised threshold is recommended when using this door bottom.
UL Fire Ratings
In addition to acoustical testing, Overly has successfully tested this product to the latest UL fire test standard UL10C/UBC 7-2 (positive pressure).
ANSI A156.2, Series 4000 Grade 1
3-3/4" Back-set Required
- Best 94K
- Schlage "D" Series
- Sargent 10 Series
- Corbin/Russwin CL3300
ANSI A156.13 Series 1000 Grade 1
3" maximum rosette diameter
- Best 35H
- Sargent 8200
- Schlage "L" Series
- Corbin / Russwin ML2000
ANSI 156.3, Grade 1
3" maximum case width
- Sargent 8300
- Von Duprin 9875/9975
ANSI 156.3, Grade 1
- Sargent 8800
- Corbin/Russwin ED6200
- Von Duprin 98/99
Full Mortise Cam-Lift
ANSI 156.4 Grade 1
Rigid arms are not recommended.
- Corbin/Russwin DC2000, DC3000, DC4000
- Dorma 8600, 8900
- LCN 4010, 4020, 4041 Super Smoothie
- Norton 7500, 8500
- Sargent 250, 251, 350, 351, 1230, 1231, 1250, 1251