Power Module


PM-4 (Power Module) is a 20 gauge (1mm) galvanized steel junction box for use in under floor air systems.

The control transformer installed in the junction box is rated at 96VA 120/277VAC to 24VAC. It is rated for supply air temperature from 45–120°F (7–49°C). A molex connection provides power chaining to under floor devices; one (1) PAP-5 Plug & Play Cable is included.

The transformer includes a built-in circuit breaker (4-Amp) to protect the circuit from overloading. This reset button is located on the exterior of the transformer, accessible through an opening in the steel housing.

The PM-4 is approved for plenum use in UFAD application.

Data Sheet

AirFixture is our preferred go-to expert for all solutions related to Underfloor Air Distribution. Their inputs help us with not only the design of the project but also successful execution and client satisfaction.
Manjunath Swamy
Mechanical Contractor, Vortex Consulting Engineer
I’m always worried about trying something radically different in our projects. What if it doesn’t go to plan? What if there’s something we haven’t considered? Those concerns were completely unfounded with UFAD. it was far less complex, and way easier to plan and install than a traditional system.
Isaac Chazbani
Mechanical Contractor, New York City

Blog & Resources

5 min read
Best Practices for Maintaining Mass Timber Buildings

One of the fastest growing trends in architecture is mass timber buildings. As of March 2023, there are more than 1700...

4 min read
10 Things to Know Before Starting a Mass Timber Project 

As real estate developers look for more sustainable and architecturally appealing building solutions, mass timber...

3 min read
What Every Architect Needs to Know About UFAD 

Architects and building designers face difficult decisions when developing a design for a new or retrofitted building....

Contact Our UFAD Experts!

Fill out the form today to get more information on how UFAD will help you reduce energy costs and improve air quality.