ER4 -Aluminum / ER4A -Steel
4-way stamped diffuser with a square frame and round connector. Fixed fins at 30° of deflection in the 4 ways. One piece construction, no noise. Available in nominal diameters 6”, 8”, 10” and 12”.
In aluminum 0.032” thickness and in black steel sheet gauge 24.
Baked electrostatic paint (polyester) white Vermont as standard finish with optional gray and matte black aluminum seal on the frame to prevent dust spots, airtight plastic packaging for fixing screws. without any extra cost, foam.