Vortex Powerfan S-Line, 8", 711 CFM

Compact AC Brushless Duct Fan With Integrated Damper, 8in

A fan mounted in a tight space often needs to be compact and self-contained, without a bulky steel housing or a separate backdraft flap bolted on after the fact. The Vortex Powerfan S-Line is built around an AC brushless motor and dual mixed-flow impellers inside a polycarbonate housing, with a backdraft damper integrated into the casing rather than added as a separate part. Its lighter housing and integrated damper make it a compact alternative to the steel VTX-Series for growers with tighter mounting space.

At 711 CFM, this 8-inch S-Line model is sized for mid-size grow rooms where housing weight and space are a factor, and its integrated backdraft damper keeps outside air from pushing back into the duct when the fan is off.

Key Features & Benefits

• AC brushless motor — drives dual mixed-flow impellers for efficient, compact operation.
• Dual mixed-flow impellers — add stages of airflow inside a single compact housing.
• Polycarbonate casing — keeps the unit lightweight compared to the steel-bodied VTX-Series.
• Integrated back draft damper — is built into the housing instead of requiring a separate add-on part.
• AMCA certified — performance and sound ratings are independently verified.

Who Should Use the S-Line

Growers working in a tight mounting space, or who want a lighter, self-contained fan with a built-in backdraft damper rather than a separate steel VTX-Series unit, are the target fit for the S-Line.

About Atmosphere

The Vortex S-Line comes out of Atmosphere Inc.'s Terrebonne, Quebec, Canada facility, where the company's mixed-flow fan category also holds AMCA certification alongside its centrifugal models.

Frequently Asked Questions

What CFM does the 8-inch S-Line move?

This 8-inch S-Line model is rated to 711 CFM. Like the rest of the Atmosphere Vortex lineup, that figure is AMCA certified and searchable in AMCA's public database.

How does the S-Line differ from the VTX-Series?

The S-Line uses an AC brushless motor with dual mixed-flow impellers in a polycarbonate housing, while the VTX-Series uses a single balanced impeller in a steel housing. The S-Line also integrates its backdraft damper into the casing, where VTX-Series installs typically add one separately.

Does it need a separate backdraft damper?

No, the backdraft damper is built into the S-Line's housing rather than sold as an add-on part. That keeps outside air from being pulled back through the duct when the fan isn't running.

Is the housing durable enough for daily use?

Yes, the polycarbonate housing is built to hold up to continuous grow-room duty, and it's lighter than the VTX-Series' steel casing without sacrificing the AMCA-certified performance rating. It's a tradeoff of weight and footprint, not durability.

Is the airflow rating independently verified?

Yes, the S-Line carries AMCA certification, so its CFM and sound ratings were tested and published rather than self-reported. That makes it directly comparable to other AMCA-listed fans, including the rest of the Vortex lineup.