• All steel construction with polyethylene handrail.
• Heavy 12 gauge steel treads and landing each welded to a 4" round collar that precisely slides over the 3-1/2" diameter center pole.
• Railing spindles and landing railing are 3/4" square steel tube.
• 10" x 1/4" thick round metal base plate with pre-drilled holes for bolting to floor.
• Treads and landing are pre-drilled to receive hardwood covering or underlayment for carpeting.
• Railing spindles have an adjustable cup shape fitting to receive the handrail.
• 1-1/4" round black polyethylene tube handrail (shipped coiled).
• All steel components are primed black.
• Spiral Kits fit into a square well opening 2" larger than the stair diameter. Round opening option is available.
• Standard Kits are furnished with 11, 12, or 13 risers to fit floor-to-floor heights from 8'0" to 10'3-1/2". Non-standard Kits can be ordered for other heights.
• Kits available in 3'6", 4'0", 4'6", 5'0", 5'6", 6'0", 6'6", and 7'0" diameters and CODE conforming models.
• Same stair may be installed either right or left hand up.
• Kits also install easily against a balcony or deck.
• Normal assembly time for the Standard Kit is four to six hours, using just a few simple tools.