- Coffman
 - Makers of hardwood and softwood stair parts. - Rintal International (1)
- L.J. Smith Stair Systems
- Manufacturer of interior stair components. Includes installation steps, catalogue, and portfolio.
- Southern Staircase
- Manufactures stairs and parts.
- American Concrete Industries
- Precast concrete door steps, terrace steps, handicap ramps and more.
- Steps Software
- Designed for the timber staircase manufacturing industry.
- Fitts Industries, Inc.
- Manufactures stair parts, systems and components.
- StairWorld Inc.
- Manufactures curved and spiral stairs and parts, turnings, and columns.
- Lapeyre Stair, Inc.
- Makers of custom-size industrial stairs designed to required building codes.
- Westfire Manufacturing, Inc.
- Manufactures wood fireplace mantels, surrounds, and stair parts.
- Adams Stair Works, Inc.
- Manufacturer of interior custom staircases and railings. Stock designs and installation available.
- Crown Heritage
- Fabricating stair and furniture components.
- Millwork Products.com
- Offers products manufactured in the United States such as mouldings, stair parts, mantels, and accessory parts.
- Stairparts, Inc.
- Manufacturer of hardwood newel posts, balusters, handrail fittings, treads, risers, and accessories.
- King's Material, Inc.
- Manufacturers of concrete stairs and segmental retaining walls.
- Old World Millworks
- Manufacturers timber parts.
- Sierra Stair Company, Inc.
- Designs and manufactures custom stairs and parts, moulding, millwork, and mantels.
- G & K Aluminum, Inc.
- Specialises in custom made railing for hotels and condominiums. Also fabricates spiral stairs and screen enclosures for pools.
- Stair Parts & Etc., Inc.
- Manufactures curved, straight, and spiral stairs and parts.
- Xiamen Quan Yu Wood/Metal Products Co
- Chinese manufacturer of stair parts including wood fittings, metal balusters, box newels, stair treads, bending handrails, mouldings, and more.
- Horner South Florida Millwork
- Manufacturer and distributor of stairs and stairparts for residential and commercial buildings.
- RK Stairs
- Online stairs retailer offering stock or custom parts including iron and wooden balusters, newels, handrails, fittings, and more.
- American Midwest Stairs
- Offers custom shop built pre-fabricated stairs and railings.
- Cooper Stairworks
- Manufacturer and distributor of stairs and stairparts.
- Ashley Steel Fabrication, Inc.
- Specialises in industrial steel handrails, ladders, stairs, and spec fabrications.
- Craft Mart
- Specialising in custom wood stairways and railings, rail parts, circular stairways, and spirals.
- Castcon-Stone
- Manufactures precast concrete stairs and landing systems for steel masonry load bearing structures and structural stud framing systems.
- Terweduwe
- Manufacturer of hand crafted wooden staircases.
- Grand River Wood Products
- Specialising in wood knobs, cabinet pulls, kitchen hardware, stair parts, finials, and more.
- Pisor Industries, Inc.
- Fabricating aluminium and stainless steel railings and stairs.
- StairWell
- Crafts balusters, newel posts, and other stair parts from antique and new lumber.
- Northwest Ornamental Iron, Inc.
- Specialists in spiral, circular and straight steel stairs and complete railing systems. Serving the Northwest.
- Cheap Stair Parts
- Online supplier of wooden, iron, and steel stair parts including balusters, newel posts, shoes and knuckles, and a variety of ornamental pieces.
- Custom Ornamental Ironworks
- Maker of stair parts, balusters, railings, and other stair components for the discerning customer.
- EZ Stairs, Inc.
- A stair building system that allows you to build deck stairs, interior stairs, basement stairs, and concrete stairs. Easy to install, fast, strong, and adjustable.
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