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Product Details

Pair of Metal Doors with Both Leafs Active

Type: Acoustical
Perimeter Seal: Single "H" 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: 48
Max Fire Rating: 1-1/2 hr

Pair of Metal Doors with Both Leafs Active

Type: Acoustical
Perimeter Seal: Single "H" 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: 48
Max Fire Rating: 1-1/2 hr
Transmission Loss in dB/Hertz - 1/3 Octave Bands
100
24
125
29
160
36
200
36
250
39
315
43
400
44
500
47
630
47
800
46
1000
46
1250
48
1600
51
2000
53
2500
53
3150
54
4000
55
5000
57

Fire codes often require a door that allows both doors to remain operable, independently of each other. This allows for maximum egress in case of a disaster. This door model is equipped with a split style astragal, which allow the doors to function in this way. Typical, doors utilizing these seals are equipped with surface vertical rod exit devices. Concealed type hardware is not recommended.

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 "H" Perimeter Seals

This door is equipped with our patented single Super "H" door sealing system. It consists of a single compression type perimeter seal, along with a metal retainer and cover. Compression seals typically offer higher acoustical ratings The seal is composed of a felt/neoprene combination that forms a tight perimeter seal.

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).

Recommended Hardware:

Exit Devices:

Surface Vertical RodANSI A156.3, Grade 1
Suggested Models:
  • Sargent 8700
  • Von Duprin 9927
  • Corbin/Russwin ED6400

Hinges:

Full Mortise Cam-Lift
Suggested Models:
  • Overly MCL-500

Thresholds:

Saddle
Must have smooth top, no ridges or grooves
Suggested Models:
  • Reese S105
  • Pemko 154
  • NGP 412
  • Zero 164

Closers:

Surface MountedANSI 156.4 Grade 1
Rigid arms are not recommended.
Suggested Models:
  • 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

Support Documents:

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