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Sound rated doors by MPI have been tested and certified by nationally recognized testing laboratories. All doors are 1 3/4” thick and do not require cam lift hinges. Rated frames are also available. We match other manufacturers’ hardware locations at no extra cost. 

Sound Rated Products

Testing and certification in accordance with the following national test standards:

ASTM E90-09 Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements

ASTM E413-10 Classification for Rating Sound Insulation

ASTM E1332-10a Standard Classification for Rating Outdoor-Indoor Sound Attenuation

ASTM E2235-04 Standard Test Method for Determination of Decay Rates for Use in Sound Insulation Test Methods

Products also meet the requirements of SDI 128 Guidelines for Acoustical Performance of Standard Steel Doors and Frames

14 Ga. Face Sheets

Hardware Options Tested
Cylindrical lock prep
Mortise lock prep
Regular heavy weight butt hinges

Seals and Gasketing
Provided for operable units

Ratings
STC 49 (operable)
STC 48 (operable)
STC 47 (operable)
STC 39 (operable)
STC 36 (operable)
STC 52 (fully sealed/inoperable with hardware preps)
STC 51 (fully sealed/inoperable with hardware preps)

Operable standard polystyrene core available with STC 28 (18 ga. std. const.)
Operable standard honeycomb core available with STC 33 (18 ga. std. const.)
Operable standard steel stiffened available with STC 38 (18 ga. std. const.)
Inoperable proprietary polystyrene based core available with STC 43 (16 ga.)

Frames grouted

Contact customer service for additional information

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