One of the most classic stiars that we manufacture. curved stairs will fit in the same opening as L-shaped ones.95% Spec.- Width: 800mm-1000mm (when arc shape, Φ>=2300mm) Handrail: Φ38-50.8mm s.steel tube Baluster: 8mm*40mm flat steel (double pieces each) Rails: Φ8mm s.steel rods Stringer: (8mm thickness mild steel plate) X 2 sides, Baking paint Treads: 19mm/15+15mm thickness, toughened glass / 38mm thickness, beech, lacqured * Shape optional: Arc/L *Color optional: see our color chart *Wood type: American Oak/ European Beech Feature- -Supported in double modular stringer( powder coated per color chart ) makes itsturdy and many shapes available. -Ease of installation with instructions provided -Fancy horizontal railing available in stainless steel cable or in glass -Bring you glass's mordernization and curved charm -Stair is available per building code Send us your house floor plan or photofor a free drawing to see how it will fit and look in your home. Any style and design of stairs is welcom here with our more than 6 years experience in manufacturing stairs. Xinding supply several classic designs of stairs supported by modular steel stringer for your demand. To help you upstairs step by step on our stairs is what we untiringly aspire after.