The National Public Seating RT4L is a robust choral riser designed for optimal performance and durability. Measuring 18"W x 72"D x 32"H, this riser features four levels, accommodating a load capacity of over 200 lbs. per square foot. The 3/4" plywood deck ensures a sturdy surface, while the reinforced 16-gauge 1-13/16" steel channel black frame provides exceptional strength and stability. Its folding legs allow for easy setup and storage, and the drop-in couplings facilitate seamless assembly. This product meets ANSI/BIFMA standards and is MAS Green Certified, making it an environmentally friendly choice for your choral needs.