What Is a Flowbar (Hidden Type Slot Diffuser)? Specs and How to Specify One
A flowbar (hidden type slot diffuser) is built to disappear into a ceiling shadow gap or reveal detail, supplying air with almost no visible fixture. Specs, applications, and how to specify one.
A flowbar, also known as a hidden type slot diffuser, is a linear air terminal built to integrate into a ceiling shadow gap or reveal detail, supplying air through a narrow opening with almost no visible fixture. Goodwind manufactures the Flowbar (model GT-H-SLT) in aluminum, with powder-coated, anodized, or custom color finishes, matching the material and finish options used across its wider diffuser range.
Flowbar Specifications
| Spec | Detail |
|---|---|
| Model | GT-H-SLT |
| Material | Aluminum |
| Finish | Powder coated, anodized, or custom colors |
| Mounting | Integrated into a ceiling shadow gap or reveal detail |
| Applications | High-end architectural ceilings where the diffuser must stay visually concealed |
Flowbar vs. Standard Slot Diffuser
A standard slot diffuser has a visible linear face that's part of the design. A flowbar is built the opposite way: it's meant to disappear, typically running along a shadow gap or reveal line where the ceiling design already has a break, so the air supply reads as part of the architectural detail rather than a separate fixture.
How to Specify a Flowbar
For MEP Consultants at the Design Stage
Specify a flowbar where the architectural ceiling design already includes a shadow gap or reveal detail that can double as the air supply path, and coordinate early with the design team since the diffuser's position is dictated by that architectural line, not the other way around.
For Contractors at Procurement Stage
Confirm the exact reveal dimensions and finish against the architectural drawings before ordering, since this product is built to integrate with a specific detail rather than a standard ceiling grid module.
FAQ
What is a flowbar used for?
It's used where the design calls for a supply air source that's visually concealed, typically integrated into a ceiling shadow gap or reveal detail.
How is it different from a standard slot diffuser?
A standard slot diffuser has a visible linear face as part of the design. A flowbar is built to disappear into an architectural reveal line instead.
Can it be custom finished?
Yes, in powder coated, anodized, or custom colors to match project requirements.
What material is it made from?
Aluminum.
Working with a concealed ceiling detail? Contact Goodwind for technical input, or see our slot diffuser guide for the standard visible option.