The T-TEC™ Stair System brings together engineered stair components designed to work seamlessly as a complete solution. Combining T-TEC™ LSL Stair Stringers with T-STRAND® Pro OSB Stair Treads, the system delivers the consistency, dimensional stability, and long-term performance that builders can rely on. Engineered to minimize warping, twisting, and material waste, it helps simplify installation while creating stronger, more dependable stair systems. Backed by industry-leading warranties and supported by Tolko's trusted distribution network, it's a smarter way to build better stairs.