S4S Mouldings

Surfaced-four-sides (S4S) mouldings are ideal for projects that require straight, smooth, and ready-to-use stock with minimal preparation. Precisely milled on all four sides, these mouldings provide consistent dimensions and clean edges, making them well suited for cabinetry, trim work, furniture components, and architectural applications. The uniform surfacing helps improve installation efficiency and reduces the need for additional sanding or machining on site.
S4S boards serve as flat stock trim or moulding blanks, baseboards, casings, headers. Because they’re already surfaced on four sides, less work is required to shape the moulding profile.
Options include tight dimensional tolerances to ensure dependable fit and repeatable results across each piece. The smooth, refined surface is ready for paint or stain, allowing for a high-quality finished appearance that highlights craftsmanship and material quality. Custom widths and thicknesses are available to accommodate specific design requirements or unique project specifications. Designed for both residential and commercial applications, S4S mouldings deliver reliability, versatility, and professional-grade performance for demanding woodworking and millwork projects.
At Classic American Hardwoods, we pride ourselves on providing a superior product matched with superior service. Our lumber is cut from the Appalachian region, with few species coming from the Southern region. Please contact us in regards to your product needs.