HOT ! The Weekend Edit｜ Other Products ｜Matte Black Oak Acoustic Trim - Harmony Series

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White River Hardwoods  ·  Harmony Series  ·  Acoustic Trim

Matte Black Oak Acoustic Trim
SKU ATR100-94MB  ·  Sold Per Piece  ·  94″ Length
Matte Black Oak  ·  Precision Cut  ·  Harmony Series Match

The finishing detail that completes the installation. Precision-cut Matte Black Oak trim designed to match the Harmony Series acoustic panels edge for edge — clean transitions at panel ends, corners, and ceiling lines.

Harmony Series  ·  Designed to Match  ·  Sold Per Piece

The panel does the work. The trim finishes the story — a precision-cut Matte Black Oak edge that makes the whole installation look considered and complete.

Product Details
Specifications

SKU
Finish
Dimensions
Sold As

ATR100-94MB
Matte Black Oak
13/16″ thick × 1-1/16″ wide × 94″ long
Per Piece

* Designed to pair with the Matte Black Oak Harmony Series acoustic panels. Order one trim piece per panel run end, corner, or transition point.

Why the Trim Matters
The Finishing Detail

✦
Precision Match
Milled to match the Matte Black Oak Harmony Series panels in finish and tone. Where the panel ends, the trim picks up — a seamless transition that makes the overall installation read as intentional and complete.

⊢
Clean Edge Termination
Acoustic panels have raw edges at corners, doorways, and ceiling transitions. This trim covers those edges cleanly — no exposed PET backing, no raw wood, no visible fasteners. The professional detail that separates a finished installation from an unfinished one.

⊕
Easy to Cut & Install
The 94″ length fits most standard ceiling heights with room to spare. Cut to length with a fine-tooth saw or miter saw. Install with panel adhesive, brad nails, or finishing nails — the same tools used for the panels themselves.

◈
Matte Black Oak Finish
A deep matte black that keeps the oak texture legible rather than flattening it. The lowest-reflectance option in the series — well suited to theaters, studios, and any room where the wall should recede. Matched to the Matte Black Oak panels.

Technical Specifications
Key Facts

Finish
Matte Black Oak

Thickness
13/16″

Width
1-1/16″

Length
94″

Sold As
Per Piece

SKU
ATR100-94MB

Pairs With
Harmony Series Panels

Lead Time
7–10 Business Days

Use
Interior Only

Planning Your Trim Quantity
Count the number of exposed panel edges in your installation — ends of runs, outside corners, transitions to adjacent surfaces, and ceiling or floor terminations. Each location needs one trim piece. At 94″ per piece, one trim covers most standard 8′ ceiling heights with approximately 2″ to spare. For 9′ or 10′ ceilings, join two pieces end-to-end with a scarf joint for a clean continuous line.

Installation
Step by Step

1
Measure & Cut
Measure the edge or corner you're trimming. Cut to length with a fine-tooth hand saw or miter saw. For corners, cut 45° miters for a clean inside or outside corner joint.

2
Dry Fit First
Always dry fit before applying adhesive. Check that the trim sits flush against the panel edge and the adjacent surface. Adjust the cut if needed.

3
Apply & Secure
Apply panel adhesive in a continuous bead. Press firmly and hold for 60 seconds. Supplement with 18-gauge brad nails for a permanent mechanical hold — set nails slightly below the surface and fill with matching wood filler.

4
Long Runs & Scarf Joints
For ceiling heights over 94″, join two trim pieces with a 45° scarf joint at mid-height. Stagger scarf joint locations across adjacent trim pieces so no two joints align at the same height.

Trade Program
13% Trade Discount for Design Professionals
Architects, interior designers, and contractors qualify for White River's trade discount on Harmony Series acoustic panels and trim. Volume pricing available for larger orders — contact your rep for a quote.

Apply for Trade Access

Care & Maintenance
Dust with a dry or barely damp microfiber cloth. Avoid solvent-based cleaners, abrasives, and saturating the wood with water. Interior use only — Harmony Series products are not rated for wet, high-humidity, or exterior environments. Allow trim to acclimate in the installation space for 24–48 hours before cutting or fastening.

ATR100-94MB — Matte Black Oak Acoustic Trim, Harmony Series. The detail that makes the installation complete.

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Brand:White River HardwoodsCategory:Acoustic Slat TrimSKU:ATR100-94MBTags:Collection: Harmony Series, Collections:Harmony Series, Matte Black, Size: 13/16" x 1-1/16"W x 94"H