PET, Fabric-Wrapped or Wood Slat Acoustic Panels: Which Should You Specify?

The short answer for a commercial fit-out: specify PET felt panels for open-plan offices, schools and corridors where impact resistance and budget rule; fabric-wrapped fiberglass panels for ballrooms, auditoriums and meeting rooms where maximum absorption per millimeter is the goal; and wood slat acoustic panels for lobbies, restaurants and feature walls where the acoustic treatment must read as architecture. The three types differ sharply in absorption (fabric-wrapped leads, reaching NRC 0.85–1.0 in common thicknesses), fire documentation (all three can meet ASTM E84 Class A or EN 13501-1 B-s1,d0, but only in the right build-up), and durability at hand height (PET wins, fabric-wrapped loses). That is the role FBM Sourcing plays as a sourcing agent and sourcing partner on projects like this.

FBM Sourcing supplies all three panel families from Chinese production for hotel, office, school and apartment projects as a building material sourcing agent, so this comparison is written the way a specifier actually decides: by room, by rating, and by what survives contact with the public. The product-page counterparts — acoustic wall panels from China and acoustic ceilings from China — cover the buying process; this page settles which type belongs on your drawings.

Quick Summary: Which Acoustic Panel Type for Which Space?

How Do the Three Panel Types Compare on Acoustic Performance?

Absorption is where the three families genuinely separate, and the honest comparison must name the mounting condition, because NRC values quoted without one are marketing. Fabric-wrapped panels lead outright: a 25 mm fiberglass-core panel typically tests at NRC 0.85–0.95, and 50 mm build-ups reach NRC 1.0 and above — the reason every purpose-built auditorium wall carries them. PET felt is mid-table: a 9–12 mm panel glued directly to the wall delivers roughly NRC 0.40–0.60, climbing past 0.80 when hung as baffles, mounted over an air gap, or specified in thicker three-dimensional profiles. Wood slat panels trail: the slatted face reflects as well as it transmits, so a standard slat-on-felt panel fixed direct runs about NRC 0.40–0.60, improving toward 0.80 only with a batten cavity filled with mineral wool behind it.

The physics behind the mounting caveat is worth thirty seconds, because it is the cheapest acoustic upgrade on the drawing. Porous absorbers work hardest where air is actually moving, and against a hard wall the air velocity at the surface is near zero — which is why the same PET panel that tests modestly when glued flat can climb dramatically on furring channels with a 25–50 mm cavity behind it. Among the three acoustic panel types on commercial projects, PET and wood slat gain the most from a cavity; fabric-wrapped panels arrive thick enough that direct mounting already performs.

The specifier’s rule: match NRC to the room’s job. An open office targeting speech comfort is well served at NRC 0.6 spread across enough area; a ballroom chasing controlled reverberation needs the 0.9-class product; a lobby feature wall is doing visual work first and acoustic work second, and the numbers should be specified accordingly rather than copied from a different room type.

Fire Ratings: What Do ASTM E84 Class A and B-s1,d0 Require Here?

All three panel types are routinely specified into commercial buildings in the US, Australia and Europe, so all three must arrive with real fire documentation. The benchmark for US interior wall finishes is ASTM E84 Class A — flame spread index 25 or less and smoke developed 450 or less; the European equivalent conversation happens under EN 13501-1, where quality commercial panels target B-s1,d0. PET panels meet these ratings through flame-retardant fiber formulations — but the certificate is per thickness and density, so a Class A report for a 12 mm panel says nothing about the 24 mm profile on your drawings. Fabric-wrapped panels have the easiest core story — fiberglass is non-combustible — but the assembly rating depends on the fabric facing passing as part of the tested build-up. Wood slat panels are the demanding case: standard MDF cores will not reach Class A, so the specification must name FR-MDF and the report must cover the finished slat-plus-felt assembly.

For school, hospital and government projects this paperwork is not a formality — it is the submittal that decides whether the container clears the consultant’s desk. Batch-matched test reports are requested with the order, and verification that the shipped goods match the certified specification happens at the factory, by FBM Sourcing’s own QC team, documented in photos and video before loading.

How Do the Three Types Compare on Cost Logic?

Without quoting numbers that shift with fiber, fabric and timber markets, the supplied-cost ranking is stable: PET is the budget floor, fabric-wrapped sits mid-range with the fabric choice driving the spread, and wood slat tops the table — a real-veneer slat panel can run to a multiple of the PET cost for the same wall area. Two structural points refine that ranking on a project budget. First, installed cost compresses the gap: PET’s knife-cut, glue-up installation is the fastest of the three, while fabric-wrapped panels ordered to size leave no site trimming at all, so labor-expensive destinations favor both against slat systems that need battens and cavity work. Second, panels are a materials-dominated trade — the product itself carries most of the installed cost, which is exactly the profile where ex-factory Chinese pricing moves a budget most, the same logic that governs which partition packages are worth importing.

The freight line follows weight and packing density rather than price. All three families flat-pack, but at roughly 8–11 kg/m² a wood slat package pays a meaningful inland-haulage and handling premium over PET at 2–3 kg/m²; on typical project quantities, however, acoustic panels rarely justify a container of their own and travel as part of the consolidated fit-out shipment, where a few hundred square meters of panels occupy a corner of a container the project was shipping anyway.

What Are the Lead Times, and What Should the Order Include?

Production windows are short relative to furniture: PET panels in standard colors run about 15–25 days ex-factory, fabric-wrapped panels made to size 20–35 days, and wood slat systems 25–35 days, with sea freight of 18–40 days on top depending on destination. The order file matters as much as the dates. It should fix the acoustic targets per room (so substitutions can be checked against something), name the fire classification and the exact thickness the certificate covers, include an approved control sample per finish, and carry a cutting overage on any patterned or mitered layout. Color consistency is the quiet risk on PET — fiber batches vary, so panels for one continuous wall should be produced in one run rather than topped up later.

Durability, Weight and Installation: The Site Realities

At a glance, the physical comparison:

Those rows decide more projects than the acoustics do. PET’s combination — light, cuttable on site, colorfast through the fiber, and shrug-it-off durable — is why it dominates schools and open offices where walls get touched, knocked and re-planned. Fabric-wrapped panels install beautifully and age badly in traffic: a snagged corner cannot be patched invisibly, so the discipline is to keep them above 1.2 m or in rooms where nobody leans. Wood slat panels are the heaviest and slowest to hang, and their weight matters at the freight line too — at roughly 8–11 kg/m² versus PET’s 2–3 kg/m², a wood slat package for the same wall area ships three to four times the tonnage.

Which Rooms Get Which Panel on a Real Project?

On a full commercial fit-out the answer is almost never one panel type — it is a schedule. A typical hotel splits three ways: wood slat across the lobby, reception and restaurant feature walls; fabric-wrapped in the ballroom and boardrooms where the acoustic consultant’s reverberation targets bite; PET in back-of-house corridors, the gym and staff areas. An office project inverts the ratio — PET across the open plan and ceiling baffles, fabric-wrapped in the townhall room, wood slat at reception only. A school is PET nearly wall-to-wall, with fabric-wrapped reserved for the auditorium, and its assembly-space walls should be read alongside the partition strategy in our guide to glass, drywall and movable partitions for commercial fit-outs.

Two coordination notes complete the schedule. First, walls are only half the acoustic package — the ceiling plane usually carries more treatable area, and the parallel decision is covered in mineral fiber vs gypsum vs metal ceilings. Second, freight favors consolidation: all three panel types flat-pack efficiently, and a 40-foot high-cube loading 65–68 m³ in practice carries several thousand square meters of PET panels — which is why acoustic packages ride along with the wider fit-out container plan rather than shipping alone.

Once the panel type is settled the next question is who makes it — see acoustic panel manufacturers in China for commercial interiors for the supplier types, the production clusters and the test evidence worth requesting from each.

Get a China Procurement Quote for Your Project

If you are specifying acoustic panels for a hotel, office, school or apartment project, send the room schedule and target ratings — a china sourcing agent working at the production end will price PET, fabric-wrapped and wood slat options against the same drawings, with per-thickness fire reports, control samples for approval, and inspection by our own QC team before anything ships. Submit your BOQ or drawings, quantities, destination port and timeline through our China procurement inquiry page, and our team will review your requirements and get back to you.