Eckel Functional Panel (EFP) Type-3 Aluminum

Pre-engineered EFP panels come in a range of sizes and styles. They can be readily positioned within the host room to achieve optimal noise reduction performance. Available in aluminum or steel, panels can be customized and finished to fit and complement any architectural layout or interior design. Easy to install during new construction or as a retrofit item, EFPs are an economical and effective means to control noise and create ideal acoustic conditions.

EFPs turn a noisy room into quieter and more accommodating space better suited to its designed purpose.

Sound Absorption

Encapsulated in a 2.0 mil (0.05 mm) flame guard polyethylene, Tested in accordance with ASTM C 423 and E 795: (Test Data below based on 30" x 120" Panel)

125 Hz

6.2 sabins

250 Hz

20.5 sabins

500 Hz

35.2 sabins

1000 Hz

34.5 sabins

2000 Hz

31.5 sabins

4000 Hz

33.1 sabins


0.99, minimum

Panel Construction


Panel Thickness

2.75 inches (70 mm) “V” ridged facing


30″ (760 mm)

Average Weight

30” x 48” (762mm x 1168mm) 10lb/4kg 30” x 60” (762mm x 1524mm) 11lb/5kg 30” x 72” (762mm x 1829mm) 13lb/6kg 30” x 96” (762mm x 2338mm) 17lb/8kg 30” x 120” (762mm x 3048mm) 21lb/10kg

Acoustical Insulation

2” (50 mm) thick, Density of not less than 1.5 pounds per cubic foot (24 kg/cubic m), Encapsulated in a 1.5 to 2 mil flame guard polyethylene, Fibrous glass, Fine fibred

Anchors & Fasteners

1/4” (6 mm)-20 x 1” (25 mm) long bolts to attach mounting brackets to the panels, cadmium plated for steel panels, corrosion-resistant anchors for fastening brackets to substrate, stainless steel for aluminium panels


4” (100 mm) of clearance between back of panel and mounting surface, Four 11ga (3mm) steel brackets per unit for attachment to walls and ceilings, Other bracket lengths available


18ga (1.31 mm) electrogalvanized steel sheet, 3/32″ (2 mm) Perforations on 3/16″ (4.8 mm) staggered centers, V-ridged on 6” (150 mm) centers to a depth of 2-3/4” (70 mm)


0.063” (1.6 mm) aluminum, channel shaped, Two 1/4-20” (508mm) threaded inserts for each framing member for attachment of panel mounting brackets


Unpainted / uncoated mill finish

Flame Spread

10 Maximum

Smoke Density

10 maximum