Architectural Stairs Inc.
- Manufacturer of spiral, helix, circular, and modular stairs in steel or wood .
- http://www.1stairs.com

SafeTec
- Manufacturer of aluminum work platforms. USA.
- http://safeplatforms.com

Heskeths Steel Fabrications Ltd
- Manufacture fire escape and staircases in steel, also balustrades, railings, wrought iron, gates, and fencing. Includes product photo gallery .
- http://www.heskeths.pwp.blueyonder.co.uk

Stairframe Inc.
- Manufacturer of steel stair stringers with a wide variety of downloadable designs and related accessories. Includes a list of participating dealers.
- http://www.stairframe.com

AF Staircase Systems Ltd.
- Design and supply spiral and custom made staircases, and loft ladders. Includes pricing.
- http://www.afstaircases.com/

Kiscadale Products
- Supplier of exterior and interior spiral staircases and gates in plastic and wrought iron.
- http://www.kiscadale.com/

The Spiral Stair People
- Manufacturer of spiral stair kits for interior and exterior use in wrought iron, cast and oak. Plus custom-built and floating stairs.
- http://www.spiralstairpeople.com

Rintal International
- Manufacture a range of stairs including license. Stair kit, spiral , folding , modular , and attic . Also available in kit form and includes a facility to project and design a staircase.
- http://www.rintal.it/

Cresent of Cambridge Ltd.
- Manufacture and install spiral, straight flight and helical staircases for a wide variety of applications. Includes an image gallery and technical data for tread geometry and treadwell dimensions.
- http://www.crescentstairs.co.uk/

Bessler Stairways Co.
- Manufacturer of overhead and ceiling mounted stairs. Includes photographic examples plus technical and dimension data.
- http://www.bessler.com/

Bede Group
- Manufacture spiral stairs. Custom, period or contemporary styles in steel or cast iron .
- http://www.bedegroup.net/spiralstairs.html

Wooster Products
- Manufacture safety treads and walkway surfaces. Installation details, specification sheets and dealer locator.
- http://www.wooster-products.com/

Alu-Rail International
- Manufacturers of industrial and architectural metalwork for the building, construction and water treatment industries. Products include handrail, flooring, staircases and balustrade.
- http://www.alurail.com

Southern Staircase
- Stair builder and supplier of stair trim. Straight , spiral, curved, flared, and scissor stairs in metal or wood .
- http://www.southernstaircase.com/

Amstep Products LLC
- Design and manufacture non-slip renovation stair treads . Includes application instructions.
- http://www.amstep.com/

Pisor Industries
- Supply spiral stairs, aluminum and stainless steel railings, ornamental metals, and custom fabrications.
- http://www.pisor.com/

Salter Industries
- Manufacturer of spiral stair kits and staircases in steel, wood and aluminum.
- http://www.salterspiralstair.com/

Eurostair
- Manufactures spiral staircases, stairways, platforms, balconies and ladders.
- http://www.eurostair.com/

Atelier-Ambros
- Manufacture a range of balustrades, columns and stairs. Includes a downloadable product catalog.
- http://www.atelier-ambros.com/

Accent Stairs
- Manufacturer of custom aluminum, steel and stainless steel straight stairs, spiral stairs ladders and handrails.
- http://accentstairs.com/

American Stair Corporation
- National manufacturers of non-slip steel stair treads and landings. Completed project portfolio and a CAD detailing system.
- http://www.americanstair.com/

Mylen Stairs Inc.
- Manufacturers of spiral and  architectural stair systems . Includes a stair gallery and FAQs.
- http://www.mylen.com/

The Iron Shop
- Manufacturer of spiral stair kits, available in metal, oak, cast-aluminum victorian designs, and custom all-welded units. On-line ordering, installation videos, and free catalog available.
- http://www.theironshop.com/

Stairways Inc.
- Manufacture spiral stairways in metal or wood, fully assembled or kit form.
- http://www.stairwaysinc.com/

Lapeyre Stair, Inc.
- Space-saving, safety stair with unique alternating tread design for steep applications in lieu of ships' ladders and vertical ladders.
- http://www.lapeyrestair.com/

ACL Industries Inc.
- Fabricate ladders, treads and gangways for marine and commercial construction projects.
- http://www.aclindustries.com/

Duvinage Corporation
- Manufacturer of custom spiral and circular stairs with components constructed of ornamental metals, exotic woods and various plastics.
- http://www.duvinage.com/

Jomy Safety Products Inc.
- Manufacture escape or access retractable and collapsible ladders, staircases, and balconies .
- http://www.jomy.com/

Arcways Inc.
- Builder of custom curved, spiral, circular stairways. Includes software to assist with the design of curved and spiral designs.
- http://www.arcways.com/