BOARDS
S4S Lumber Boards
Surfaced on all four sides for a smooth, uniform finish on every face, S4S boards offer clean, consistent dimensions ideal for exposed applications where all sides may be visible. Milled from Radiata Pine for its straight grain, moderate density, and dependable dimensional stability, they machine cleanly and accept paint or stain evenly. S4S boards are a versatile choice for trim, shelving, cabinetry, and general millwork wherever a fully finished board is required.
3 Substrate Options
1 Machining Option
10 Year Warranty
Sizes
Widths: 1.5 to 11.25"
Thicknesses: 7/16" to 1 1/4"
Colors
Substrate Options
Falcata
Our newly engineered Falcata substrate offers a clear profile for easy machining, and A-grade fibers at its base, making it a reliable, lightweight, and user-friendly option.
Pine
Pine is known for its versatility and workability. It offers excellent strength and stability, making it ideal for a wide range of construction and millwork applications.
LVL
LVL (Laminated Veneer Lumber) is an engineered wood product that offers superior strength and stability. It is composed of multiple layers of thin wood veneers, glued together to form a single, solid piece.
Machining and Customization
CTI components are machined in-house to precise, repeatable tolerances and arrive prepped and ready to install.
Available operations include:
Custom Length
Cut to your exact length, no field cutting.
Frequently Asked Questions
How is S4S different from S3S?
S3S boards are surfaced on three sides, while S4S boards are surfaced on all four. S4S is the better choice when the board will be fully exposed and all faces need a finished appearance.
What are S4S boards used for?
S4S boards suit trim, shelving, cabinetry, and general millwork wherever a fully finished, uniform board is required.
Is this product covered by a warranty?
Yes. Every CTI product carries a 10-Year Manufactured Defect Warranty, ensuring it is free from material and workmanship defects under normal use.
Related Products
Technical Details and Resources
Each CTI product comes with a 10 Year Manufactured Defect Warranty, ensuring they are free from material and workmanship defects under normal use for the product's lifetime. This commitment to quality offers you peace of mind and guarantees that you are investing in products built to last. You can view our product-specific warranties below.