Trim-Grade S4S Lumber: Ready When You Are!
High-quality S4S boards for trim, millwork, and furniture.
Stocked in red oak, poplar, and pine, and also available in other hardwoods.
Fast turnaround and precision you can trust!
Looking for dependable, straight-edge lumber that’s ready to work with? Boswell Lumber Company is your go-to S4S lumber supplier in Western Pennsylvania, offering a full line of surfaced wood boards in red oak, poplar, and pine.
Whether you need S4S hardwood for interior trim, cabinetry, or custom millwork, most of our inventory is stocked and ready to go.
What is S4S Lumber?
S4S stands for Surfaced Four Sides, meaning each board is planed on all four faces: two flat faces and two smooth, square edges. The result? Clean, straight-edge wood planks that are ideal for furniture, interior trim, and millwork applications.
Our trim-grade S4S boards feature a clear face and two clear edges, giving you beautiful, workable material right out of the rack – no additional milling required.
Our S4S Stock
We carry S4S stock for millwork in the most requested dimensions and species:
- Species: Red Oak, Poplar, Pine
- Widths: 1" x 4", 6", 8", 10", 12"
- Lengths: 2’ through 16’
Each board is carefully selected for quality and consistency—perfect for use as interior trim boards, moulding and trim lumber, or dimensional hardwood boards for woodworking and furniture.
Why Builders and Woodworkers Choose Our S4S
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Ready-to-Use
Surfaced, square, and clean - no extra prep needed -
Furniture-Grade S4S
Great for cabinetry, shelving, and fine woodworking -
Clear Face Lumber
Clean appearance with minimal defects -
Reliable Inventory
Extensive supply of raw lumber on-site -
Fast Turnaround
Our heavy inventory means less waiting, more building -
Availability
We have a various selection of species stocked
Whether you’re a contractor needing S4S boards for trim, or a woodworker searching for surfaced lumber for woodworking, we’ve got what you need – on the ground and ready to ship.
Get the S4S Lumber You Need - Without the Wait
Contact Boswell Lumber Company today to check availability or place your order for poplar, red oak, or pine S4S lumber. We’ll help you find the right boards for your project and deliver the quality you expect.
Get the S4S Lumber You Need - Without the Wait
Contact Boswell Lumber Company today to check availability or place your order for poplar, red oak, or pine S4S lumber. We’ll help you find the right boards for your project and deliver the quality you expect.