Premium Black Walnut Press-Curved Slat | 136.7 x 7.8 x 2.1 cm

A long, slender walnut slat: 136.7 x 7.8 x 2.1 cm in solid black walnut. The slimmest section in our walnut range at this length, specified when a long line is wanted without visual weight — full-height back slats on tall seating, or wide-span seat elements where the piece should read as a line rather than a board.

What the dimensions mean

At 2.1 cm this is the thinnest solid slat we produce at this length — thin enough that the piece reads as a slender line, thin enough to follow a pronounced curve. At 7.8 cm wide it still presents enough surface for a back slat or a narrow seat element. At 136.7 cm it covers a full-height back or a wide span in one piece, with no joint in the visible face.

Specifications

Where this size is used

• Full-height back slats — verticals running the height of a tall back.
• Slender seat elements — where the seat should read as lines, not boards.
• Tall chair backs — the length covers the full back without a joint.
• Statement pieces — the dark figure at this length is the feature of the piece.

The trade-off at 2.1 cm

A slender section bends beautifully and reads as a line, but it is not a load-bearing element. For back slats and decorative spans it is ideal; for seat boards that carry weight, step up to a 3 cm or thicker section. Walnut is denser than ash, so at 2.1 cm the curves are kept gentle — which suits the long, flowing lines this size is specified for.

Ordering

Standard sizes ship from repeated production; custom lengths and sections follow quotation, sample, production. Long slats are packed to support the full length of the curve. Send your specification through our contact page for a quotation within 24 hours. See also our bent walnut page.

Questions buyers ask: Is this section strong enough for a seat? For light-duty or decorative seating only — for load-bearing seats we recommend 3 cm or thicker. Can the length be extended? Yes, to order. How is figure matched? Colour-matched sets are available across a production run.

How this size fits the range

This 136.7 x 7.8 x 2.1 cm slat is the slenderest long slat in the walnut range — a shade thinner than the 136.5 x 7.7 x 2.3 cm version. The difference sounds trivial and occasionally matters: at 2.1 cm the piece reads as a line rather than a board, which is the whole point on tall backs where a heavier section would look clunky. For spans that need the extra section, its neighbour; for lines that need the lightness, this one.

For context: the range runs from 55 cm to 136.7 cm in length. This is the longest, and the thinnest at that length.

Finishing and care

At 2.1 cm the finish is also a protection decision — a thin section shows wear at the edges first. Oil or hard-wax oil keeps the surface repairable; a film finish on a slender, handled slat is harder to renew without stripping. Walnut lightens with UV exposure over years, so keeping tall back slats out of direct sunlight slows the change. Edges are eased as standard because a sharp edge on a slender section catches the eye and the hand.

Frequently asked questions

Is this section strong enough for a seat?

For light-duty or decorative seating only. For load-bearing seats we recommend 3 cm or thicker — the 76 x 10 x 3.8 cm walnut slat is the seat option in this species.

Can the length be extended?

Yes — longer lengths are made to order, with feasibility confirmed against species and section before quoting.

How is figure matched across a tall back?

Colour-matched sets are available so the verticals on one chair read as one piece of wood.

What radius does 2.1 cm walnut reach?

Gentle curves suit it — walnut is dense, so pronounced curves are better served by a thinner ash section or lamination.

How is it packed?

Packed to support the full length of the curve, with corner protection at the bends.

Sizing at a glance

Programme notes

Two things distinguish this slat in production. The first is length: 136.7 cm of walnut has to be selected for grain run-out before it is cut, because a blank whose grain angles toward one face will not survive the bend — and walnut boards long enough for this slat are the ones most likely to have figure that runs out. The second is the section: at 2.1 cm the piece is handled more carefully through drying and finishing, and packed to support its full length.

For tall-back programmes, the practical question is figure continuity: the verticals on one chair should read as one piece of wood. Colour-matched sets are quoted per run for exactly this reason.

Summary

136.7 x 7.8 x 2.1 cm of black walnut — the longest, slenderest slat in the range, for full-height backs and long lines where weight would spoil the design. Send the drawing; we confirm feasibility, quote within 24 hours, and deliver prototypes in 7–15 days packed to support the full length.