Made in the USA Since 1895.
Rising over 75 feet, this custom Duvinage spiral stair provides key access to this 19 million gallon tank. Featuring 1¼” 19W4 aluminum bar grating treads and platforms, this 104-riser stair includes five rest platforms, tread and platform support legs, swing bracing, and custom helixed aluminum rail with industrial rod baluster infill. Location: Nashville, Tennessee.