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Pottorff's LIST Tool Redesign Showcased in the January ASHRAE Journal

Our popular LIST Louver Information and Selection Tool was recently redesigned with more search parameters and a fully responsive design. There is no need to register to use this valuable online program and you can export your schedule directly into our SPECs pricing program.

NEW EFD-445-PH Drainable Blade Penthouse

Pottorff's new EFD-445-PH expands our penthouse line with a model that will help resist non-wind-driven rain. It is ideally suited for use in intake and exhaust applications and serves as a gravity ventilator, fan discharge cap, fresh air intake cap, sight shield or pressure relief ventilator.


Free Area: 8.1 ft2

Free Area Velocity: 1026 fpm

Pressure Loss: 0.16 in.wg.

View EFD-445-PH Catalog Page
NEW Slot Diffuser Mounted Controller for our Remote Manual Balancing Dampers

The Slot Diffuser Mounted Controller allows for easy mounting of the RCS-10 and install these dampers when used with slot diffuser applications. Can be easily adjusted using a 7/32” socket or the optional RCS-15R adjustment tool.

Pottorff Announces NEW Field Supplied Steel Plenum for CFD-521-NP Ceiling Radiation Damper

Field supplied steel plenums can now be used with our CFD-521-NP for duct connections in wood truss floor/ceiling and roof/ceiling assemblies where fiberglass insulated plenums are not allowed.

Pottorff Signs Agreement to sell its Noise Control Product Division to Metal Forms Manufacturing Inc.

Pottorff has signed a definitive agreement to sell its Noise Control products division (with the exception of acoustical louvers), and the Dynasonics brand name, to Metal Form Manufacturing Company, Inc. (Metal Form). This move will provide additional resources and capacity to support Pottorff’s robust louver and damper growth and reinforce our commitment to be the easiest to do business with. Pottorff will continue to accept Noise Control product orders thru December 24, 2019 for shipment no later than January 23, 2020.  All Noise Control product orders received after December 24, 2019 will be forwarded to Metal Form for their review and reassignment under the Dynasonics brand.