Smooth Con Heart Redwood 2" x 4" x 10' S4S

Actual: 1-1/2" x 3-1/2" x 10'

Smooth Con Heart Redwood S4S is a construction-grade lumber milled from the heartwood of the redwood tree and surfaced on four sides for smooth, uniform dimensions. Like all Con Heart material, it allows larger knots and imperfections than higher clear grades, but it maintains the natural decay and insect resistance of heartwood. The surfacing gives it clean edges and a refined appearance, making it easier to work with and ready for installation.

This versatile material is widely used for decking, fencing, siding, and trim where durability and a smoother finish are required. Smooth Con Heart Redwood S4S balances affordability, strength, and natural beauty, making it a dependable choice for a wide range of outdoor projects.

Lumber Grades and Definitions

A reference guide to the common grades and surfacing designations for this type of lumber.

• Smooth: Indicates the lumber has been surfaced to create a refined, uniform finish, in contrast to rough-sawn material.
• Con Heart: Stands for “Construction Heart.” A grade of redwood cut from the heartwood portion of the tree. Allows larger knots and imperfections compared to higher appearance grades while maintaining the natural durability of heartwood.
• Redwood: The species of wood. Redwood is valued for its natural beauty, ease of workability, and resistance to moisture and insects. It is commonly used in outdoor projects such as decking, siding, fencing, and landscaping structures.
• S4S: Stands for “Surfaced Four Sides.” Lumber that has been planed smooth on all four sides for consistent dimensions and a clean finish, ready for installation.

⚠️ WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to www.P65Warnings.ca.gov/wood.