ALPRO®

CEILING BAFFLES


ALPRO Ceiling Baffles are fully factory assembled, modular units of formed perforated metal skin, reinforced by structural components, containing encapsulated acoustical energy absorbing material.

ALPRO Ceiling Baffles may be hung vertically from the baffle side or end, or may be suspended horizontally like a cloud.

ALPRO Ceiling Baffles provide a fast, cost-effective method for controlling reverberant noise in existing facilities, and are ideally suited for use in water treatment or other industrial facilities, natatoriums, hospitality areas, auditoriums - any space where reverberant noise is a problem.

Alpro Baffles are finished in your choice of standard or custom powder coat colors. Post fabrication powder coating assures total coverage of all surfaces for maximum protection from attack by moisture or airborne contaminants.

Standard Construction

Metal Facing Materials

  • Aluminum, .020" in smooth surface, .032" thickness in stucco-embossed or smooth surface
  • Steel 22, 24, or 26 gauge thickness, G-90 galvanized smooth surface
  • Perforation Pattern, 1/8” (0.125”) diameter holes on 21/64” (0.328”) staggered centers; 13.2% open area
  • Backer Panels are made of the same metal as the face and provide total encapsulation of the sound absorptive material and enhanced acoustical performance.

Note: Special metals or custom perforation patterns may be available for unique applications. Please consult with the factory or your ALPRO representative for availability.

Frames

  • Aluminum framing members provide the skeletal structure of the baffle.
  • Standard baffle thickness is 2 inches, with custom thicknesses available from 1inch up to 6 inches.
  • Internal stabilizers are required for baffles over 48” long.(The exact quantity and spacing of stabilizers will depend on material thickness and baffle design.)
Without Stabilizer  Single Stabilizer  Double Stabilizer
DWG | DXF | PDF DWG | DXF | PDF DWG | DXF | PDF
ALPRO Baffle without stabilizer ALPRO Baffle single stabilizer ALPRO Baffle double stabilizer

Sound Absorbers

  • 1.5# density x 2" thick fiberglass, encapsulated in 1.5 mil thickness black polyethylene, fully sealed
  • 1.5# density x 2" thick fiberglass, encapsulated in 2.5 mil thickness low gloss black PVC, fully sealed
  • 1.5# density x 2" thick fiberglass, encapsulated in .75 mil thickness high gloss clear PVC, fully sealed
Note: Special sound absorbing materials may be used to accommodate baffles with custom thickness or special acoustical performance requirements. Please consult with the factory or your ALPRO representative for availability.

Mounting Methods

  • Flush Mounts: Extruded aluminum mounting strips allow the baffle to mount flush against existing ceiling structures.
  • Angle Mounts: “L” shaped angle brackets permit bolt-up flush mounting against existing ceiling structures.
  • Offset Mounts: “Z” Clips are available in 1”, 2”, or 4” lengths for offset fixed mounting to finished ceilings for improved acoustical performance.
  • Horizontal Tunnel Mounts: Reinforced sleeves in the baffle corners allow for through-baffle direct ceiling attachment by bolt or suspension from ceiling structures via threaded rods.
  • Eye Bolts: Threaded nutsert receptacles are built into the baffles for field installation of eyebolts used to suspend the baffles from ceiling structures.
Note: Special metals or custom perforation patterns may be available for unique applications. Please consult with the factory or your ALPRO representative for availability.

Acoustics

Laboratory tests to evaluate the sound absorption of ALPRO baffles show results in a range from .90 to 1.15 when tested in accordance with ASTM C-423.

ALPRO baffles are furnished with sound absorbing material already installed to assure predictable results, up to a perfect rating of NRC = 1.0 (1.0 sabin/square foot), based on extensive product testing.


Sound Absorption of Alpro Baffles
Baffle width 30" x Length
Freq.(Hz)

4'

5' 6' 8' 10'
125 3.2 4.0 4.8 6.4 8.0
250 9.4 11.8 14.1 18.6 23.6
500 13.6 17.0 20.4 27.2 34.0
1000 12.0 15.0 18.0 24.0 30.0
2000 10.4 13.0 15.6 20.8 26.0
4000 8.6 10.8 12.9 17.2 21.6
Sabins 11.4 14.2 17.0 22.7 28.4
Values expressed in Sabins Test RAL A90-193 1.5# X 2" PVC wrapped fiberglass, 4" airspace.

Range of Acceptable Reverberation Times 500 cps

The lower line is most suitable for areas of speech; upper line for music. For general use, a reverberation time (vertical scale) between the two lines is recommended.

Actual acoustical performance of your baffle installation depends on a variety of factors including, baffle thickness, coverage area, mounting method, type and density of sound absorbing material utilized, room volume, and materials of building construction.

Consult with the factory or your ALPRO representative to discuss your particular noise abatement challenges and for application suggestions to maximize acoustical performance for your project.