Acoustical Door

Model 4895161 Metal Door

Acoustical Rating: STC 48

Pair of Metal Doors with Both Leafs Active

Quick Specs

Maximum Fire Rating:
1.5 hrs

Maximum Leaf Size:
48" x 96"

Perimeter Seal:
Single "H" Gasket

Door Bottom:
Super "H" Door Bottom

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Recommended Hardware

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Surface Mounted Closer
Rigid arms are not recommended.
ANSI 156.4 Grade 1
Show Suggested Models

  • Corbin/Russwin DC2000, DC3000, DC4000
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  • LCN 4010, 4020, 4041 Super Smoothie
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  • Sargent 250, 251, 350, 351, 1230, 1231, 1250, 1251

Surface Vertical Rod Exit Device
ANSI A156.3, Grade 1
Show Suggested Models

  • Sargent 8700
  • Von Duprin 9927
  • Corbin/Russwin ED6400

Full Mortise Cam-Lift Hinge
Show Suggested Models

  • Overly MCL-500

Saddle Threshold
Must have smooth top, no ridges or grooves
Show Suggested Models

  • Reese S105
  • Pemko 154
  • NGP 412
  • Zero 164
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.
Split Astragals at the Meeting Stile
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.
UL Fire Ratings
  In addition to acoustical testing, Overly has successfully tested this product to the latest UL fire test standards, including UL 10B (neutral pressure), UL10C/UBC 7-2 (positive pressure).
Transmission Loss in dB/Hertz - 1/3 Octave Bands
100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000
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