
STS4 1×4
A flat face with a slim groove at each joint. It is the narrower of the two STS4 sizes on this page.
- Actual size
- 0.59 × 3.54 in
- Covering width
- 3.15 in
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A flat face with a slim groove at each joint. It is the narrower of the two STS4 sizes on this page.

The same flat STS4 face on a wider board, so a wall shows about 27% fewer joints than with the 1×4.

A thicker board with a stepped face. Each joint forms a square step that casts a shadow line.

Raised ribs with narrow grooves between them run the length of each board.

Angled facets run the length of each board in a sawtooth pattern.
The images show the shape of each face, not exact color. Thermory notes that each piece of wood differs in appearance and that shade can vary slightly between production batches, so see a sample before you order. Thermory catalog, p. 8 Thermory USA guide, p. 2
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