Core
Published reference1½, 2 or 3 PCF semi-rigid fiberglass.
Project decisionConfirm density, thickness and the selected banner construction.
ACC-U-SOUND · Low-density baffle / banner
Cover more open volume with a flexible suspended format.
LDB uses a semi-rigid low-density core, sewn edges and grommet mounting. Its scale, finishes and construction are different from the rigid HB baffle family.
- Placement
- Suspended
- Function
- Large-area open-volume absorption
- Reference construction
- Semi-rigid fiberglass + sewn cover
- Project inputs
- Size · finish · grommets · suspension
LDB product role
LDB is a banner-scale product—not a rigid HB substitute.
The published LDB family uses a 1½, 2 or 3 PCF semi-rigid fiberglass core and can be made in custom sizes up to 4 × 25 feet.
Natural sewn edges, several published covering families and grommet attachment distinguish LDB from rigid wrapped baffles. The final suspension, sag, orientation and service coordination need project-specific review.
- What it does
- Suspends large low-density absorptive baffles or banners in open rooms.
- What changes
- Core density, thickness, dimensions, cover, grommets and hanging layout.
- What to verify
- Finish, orientation, support, clearances, fire data and installation scope.
The product reference shows the format and grommet suspension concept. Confirm the current cover, shape and hanging detail.
Configuration ledger
Plan the banner, grommets and support together.
LDB’s long format makes layout and suspension part of the product decision. Coordinate the treatment against structure, services and the occupied zone.
Thickness
Published reference1, 1½ or 2 inches.
Project decisionMatch thickness to the current tested assembly and desired format.
Size + edge
Published referenceCustom sizes up to 4 × 25 feet; natural sewn edges.
Project decisionCoordinate finished dimensions, orientation, seam and expected drape or curvature.
Finish
Published referencePVC in perforated or non-perforated versions, rip-stop sailcloth, Webcore vinyls, and designer- or customer-specified fabrics are published.
Project decisionConfirm acoustic transparency, color, cleanability, environmental suitability and fire documentation.
Mounting
Published referenceGrommets are the published product attachment.
Project decisionDefine grommet spacing, hanging material, structure, elevation, restraint and installer scope.
Published acoustic reference
Only the 1- and 2-inch values are published.
The product sheet lists a 1½-inch thickness but does not assign it an NRC value. No intermediate value is inferred.
Open the LDB product PDF| Published thickness | Published NRC |
|---|---|
| 1 inch | 0.80–0.90 |
| 1½ inches | Not published |
| 2 inches | 1.05–1.15 |
Request the current ASTM C423 evidence for the selected core density, thickness, cover and hanging configuration.
Fire-test boundary
The source states a Class A fire rating per ASTM E84 but does not map that statement to every listed cover. Confirm current fire-test documentation for the exact cover and assembly.
Published applications
Place the product in the right room condition.
QTS publishes LDB for large or active interiors where a suspended, banner-scale treatment may be appropriate.
Learning + circulation
- Classrooms
- Corridors
Large activity
- Gymnasiums
- Indoor swimming
Work
- Offices
- Project-specific large spaces
Documents & coordination
Build a current LDB project record.
Because the published LDB PDF is a concise one-page reference, supplement it with current cover, fire, acoustic and suspension information before specification or procurement.
Request current project documentsProduct source boundary
The current LDB PDF is a one-page product sheet rather than a detailed written specification. It does not publish full suspension, tolerance or finish-test details. Request current project-specific documentation.
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.
LDB questions
Clarify the assembly before specification.
Use the published information to frame product review, then verify the exact assembly and evidence with QTS.
How does LDB differ from HB?
LDB uses a low-density semi-rigid core, sewn cover and grommet mounting in sizes up to 4 × 25 feet. HB uses a rigid 6–7 PCF core and a factory-installed specialized bracket.
What NRC applies to the 1½-inch LDB?
The current product sheet lists the thickness but does not publish an NRC value for it. Request the applicable test report.
Does the Class A statement cover every listed fabric or vinyl?
The source does not establish that. Confirm fire-test documentation for the exact PVC, sailcloth, vinyl or customer-specified fabric.
Are hanging cables and structural attachments included?
The public sheet identifies grommets but does not define the complete suspension scope. Coordinate hanging material, structure and installer responsibilities with QTS and the project team.
What should be shown on the room section?
Show banner dimensions, elevation, orientation, spacing, structure, hanger points, sprinklers, lighting, air distribution, access and occupied clearances.
Have an LDB condition to review?
Map the open volume before sizing the banner.
Share the room section, structure, treatment zone, service clearances, finish environment and acoustic criteria with QTS.