Core
Published reference6–7 PCF rigid fiberglass in one-piece or two-piece construction.
Project decisionConfirm construction, thickness and current product data.
ACC-U-SOUND · Rigid hanging baffle
Put absorptive surface into the open volume.
HB suspends rigid, fabric-finished baffles from a QTS specialized bracket. One-piece and back-to-back constructions carry different published edge and thickness options.
- Placement
- Suspended
- Function
- Two-sided open-volume absorption
- Reference construction
- One-piece or back-to-back rigid fiberglass
- Project inputs
- Layout · construction · finish · suspension
HB product role
Choose one-piece or back-to-back construction deliberately.
HB uses a 6–7 PCF rigid-fiberglass core and a factory-installed specialized hanging bracket for large open environments.
One-piece baffles are published with square edges. Back-to-back construction expands the edge choices and changes how the fabric returns at the panel joint. Suspension hardware beyond the QTS bracket is identified as contractor scope in the source specification.
- What it does
- Suspends absorptive baffles within a large open room volume.
- What changes
- One-piece or back-to-back construction, thickness, size, edge and finish.
- What to verify
- Structure, suspension, spacing, orientation, clearances and matching test data.
The product image shows the QTS baffle reference. The overhead project photograph provides spatial context and is not a substitute for the product mounting detail.
Configuration ledger
Coordinate the baffle and the suspension as one system.
Panel construction, bracket, orientation and spacing all affect a suspended layout. Resolve them against the structure and building services.
Thickness + size
Published referenceOne-piece: 1, 1½ or 2 inches. Back-to-back: 1¼, 1½ or 2 inches. Published maximum 48 × 120 inches.
Project decisionSelect the construction and dimensions as a matched set.
Edge
Published referenceSquare only for one-piece core. Square, bevel, miter or radius are listed on the web page for back-to-back construction; the PDF specification narrows the two-piece list to square, radius or bevel.
Project decisionConfirm the current edge options for the selected construction.
Finish
Published referenceGuilford FR701 2100 Series is listed as standard; other fabrics and perforated vinyls are referenced.
Project decisionCoordinate color, texture, fabric direction, cleanability and test applicability.
Suspension
Published referenceFactory-installed QTS specialized hanging bracket. The specification assigns installation and hanging material to the contractor.
Project decisionCoordinate structure, hanger material, load path, elevation, restraint and installer scope.
Published acoustic reference
Published values span both HB constructions.
Use thickness and construction together when requesting current acoustic evidence; do not assume the same report covers every one-piece and back-to-back baffle.
Open the HB product PDF| Published thickness | Published NRC |
|---|---|
| 1 inch | 0.85 |
| 1¼ inches | 0.85 |
| 1½ inches | 0.95–1.00 |
| 2 inches | 1.00–1.05 |
The public table does not label each value by one-piece versus back-to-back test configuration. Ask for the ASTM C423 report matching the selected baffle construction and suspension.
Fire-test boundary
The written source ties its ASTM E84 Class A statement to baffles with the standard fabric. Confirm current test documentation for the selected construction and finish.
Published applications
Place the product in the right room condition.
QTS publishes HB for large-volume interiors where treatment can be suspended within the room rather than confined to a wall or ceiling plane.
Activity
- Gymnasiums
- Multi-purpose rooms
Production + work
- Factory production facilities
- Large open offices
Assembly
- Auditoriums
- Project-specific open volumes
Documents & coordination
Build a current HB project record.
The HB PDF documents the two construction concepts and QTS bracket. Complete the project record with structural and installer coordination for the full suspension.
Request current project documentsProduct source boundary
The HB web page and PDF differ in the published edge list for back-to-back construction. They also separate the factory-installed QTS bracket from contractor-supplied hanging material. Request the current assembly and suspension detail.
Selection record
Record the selected construction, dimensions, finish, edge and mounting together. Request samples and current acoustic and fire-test documentation that match that assembly.
Field coordination
Confirm field dimensions, substrate or structure, penetrations, adjacent systems, installer scope and access requirements before fabrication or procurement.
HB questions
Clarify the assembly before specification.
Use the published information to frame product review, then verify the exact assembly and evidence with QTS.
What is the difference between one-piece and back-to-back HB?
One-piece baffles use a single rigid-fiberglass core and publish square edges only. Back-to-back construction joins two wrapped cores and publishes additional edge possibilities.
Who provides the hanging material?
The source says QTS provides a factory-installed specialized baffle bracket, while installation and hanging material are by the contractor. Confirm current scope and details.
Which edge profiles are current for back-to-back baffles?
The web page and PDF do not list exactly the same set. Request current assembly-specific product data before detailing the edge.
Do I need structural coordination?
Yes. The product information does not replace project structural, seismic, life-safety or overhead-service coordination.
Which NRC report applies?
Request the report matching the selected one-piece or back-to-back construction, thickness, finish and hanging configuration.
Have an HB condition to review?
Bring the overhead volume—not just a baffle count.
Share the room section, structure, service coordination, desired baffle layout, construction and performance criteria with QTS.