The typical ranges by line
Each product line lives in its own thickness band, and the bands tell you what the line is for. Flat veneer panels run 3-18 mm over an MDF or plywood core, thin enough to ride on joinery and thick enough to span battens. Fluted and acoustic slat panels run 12-22 mm, because the machined profile needs depth and the panel needs stiffness at widths of 120-160 mm. WPC profiles run 9-21 mm across indoor slat boards and outdoor co-extruded planks. Solid edge-glued panels run 15-40 mm, honest material that carries tabletop-like presence on a wall. And the raw material line sits apart: wood veneer sheets are 0.3-0.6 mm of face, backed with nonwoven or paper, to be pressed rather than hung. All of these are category references per model and spec sheet, not promises of a particular stock item.
| Line | Typical thickness | Why the band sits there | What the choice changes |
|---|---|---|---|
| Wood veneer sheets | 0.3-0.6 mm | Face material to press, not a wall product | Handling, pressing schedule, substrate choice |
| Veneered flat panels | 3-18 mm | Core thickness plus pressed face | Rigidity between battens, joinery fit |
| WPC panels | 9-21 mm | Profile stability in wood-plastic blend | Span, weight, outdoor span behavior |
| Fluted and slat panels | 12-22 mm | Profile depth plus core stiffness at 120-160 mm widths | Slats between battens, edge robustness |
| Solid wood panels | 15-40 mm | Edge-glued strip construction | Presence on the wall, fixing, weight |
What thickness actually changes
Rigidity comes first. Between two battens, a thicker panel resists bowing and oil-canning; a thin panel asks for tighter batten centers or a stiffer substrate. Flatness on the wall is a conversation between thickness and spacing, and the fixing system page ties the two together. Weight follows thickness and density: solid panels at the top of their band are heavy in the hand and heavy on the wall, which matters on ceilings and on partitions. Edges follow too - a 22 mm slat panel takes knocks and fixings differently from a 12 mm one, and edge banding programs differ accordingly.
Freight is the quiet one. Thickness drives how many square metres fit a container: as a category reference, a 40 foot high cube carries in the order of 800-1,200 square metres depending on panel thickness and packaging, an estimate the desk treats as a planning figure rather than a promise. Thin panels pack more wall into the same box; thick solid panels pay for presence in freight. None of this appears as a price - it appears as square metres per container, and it is one reason the thickness line is read before the color line.
Thickness also sets how far the section can be pushed visually. A fluted face machined at a 22 mm slat width reads differently at 12 mm than at 22 mm overall: the same pitch leaves a shallower shadow or forces a shallower valley, and designers who draw a deep shadow line onto a thin panel discover the compromise at sampling. On solid panels, thickness is the look - a 40 mm oak panel is a different object from a 15 mm one in shadow, in sound and in fixings - and the solid panel line keeps its full band open for exactly that reason. Sampling is where these trade-offs become visible, which is why approval is the moment to lock the number.
Thickness and the fixing system
The fixing system and the thickness are specified together, because the wall behind the panel is half the structure. On battens, the batten depth creates the cavity and the panel thickness completes the assembly; on aluminum rail systems with clips, the panel engages the rail and the section must suit the clip. Acoustic builds add a further layer: the cavity behind a slat panel is part of the tested configuration, so panel thickness, batten depth and felt thickness jointly define both the performance and the fixing. The installation systems guide draws the options, and the mounting system line lists the hardware. Ceilings deserve their own caution - weight, span and fixing all tighten - and the ceiling note collects them.
How thickness is measured and checked
Buyers sometimes discover that two plants measured different things. On a flat veneer panel the question is simple: nominal thickness is core plus face, measured with a caliper at agreed points. On a fluted or slat panel the profile creates a second reading - depth at the peak of the slat versus depth at the valley - and the order should name which one the specification means, or both. The desk fixes thickness and its tolerance in the order file, and inspection measures against that agreement panel by panel during pre-shipment checks. Tolerances are agreed per order in writing; they are part of the checklist the desk starts from, alongside flatness, moisture content and finish adhesion, so that the panel that arrives is the panel the drawing assumed.
Thickness decisions in the sample-to-bulk path
Thickness is cheaper to change on paper than in production. A sample cut at 18 mm does not oblige a plant to stock 18 mm for bulk, and a color approved on one thickness does not automatically run at another; presses, profile tooling and packaging are set per specification. When a range needs two thicknesses - a 12 mm ceiling panel and a 21 mm wall panel in one color - the desk treats them as related but separate production items, sharing the retained swatch and splitting the tolerance sheet. The color card then shows both, so distributors understand the range carries a thickness choice rather than a single panel. First orders of a custom color commonly run 45-60 days against the 25-45 day band for veneer families, reference ranges confirmed in writing per order, and the thickness decisions are what keep those schedules honest.
Choosing a thickness for a program
Thickness follows use. Retail ceilings and light partition walls lean toward the thinner end of a band; hotel corridors and feature walls take the middle; furniture-like wall joinery and reception desks justify solid panels at the top of theirs. Program-level planning adds the commercial frame: veneered wall panels commonly start from around 100-300 square metres per color and acoustic slat from around 100-200 square metres, with production in the 25-45 day band for veneer families and longer for first orders of custom colors - reference ranges confirmed in writing per order on the MOQ and lead time page. When a range mixes lines, thickness decisions come first, because the container math, the fixing hardware and the inspection plan all inherit them.
Once thickness is fixed, weight and handling decisions fall into place almost mechanically, and the weight and handling note takes the next step. To have the desk check a thickness and its tolerance against real plants, the quote form collects the sizes, the fixing system and the market in one submission.