Indupart Ltd
Indupart- The UK'S largest trade supplier of industrial door components/hardware & supplier of industrial doors to the trade. Depots at Stockport, Hemel Hempsted, Bristol Glasgow
http://www.indupart.co.uk/

McKeon Door Company
Manufacturer of coiling grilles, doors, fire doors, and custom engineered closures.
http://www.mckeondoor.com/

Intumescent Seals of Cambridge, UK
Intumescent seals including fire and smoke seals for fire doors, glazing, ventilation, services, pipes & cables etc.
http://www.intumescentseals.co.uk

Aadhunic Technology
Manufacturers of passive fire protection products such as fire doors, intumescent seals, panic bars, etc.
http://www.firedoorsindia.com/

Vancouver Door Company
Vancouver Door Company is recognized for exceptional craftsmanship. We built this reputation through years of continually improving product and efficiency of our operations
http://www.vancouverdoorco.com/

The Maiman Company
Manufacturer of architectural wooden fire-rated stile/rail doors, Thermal Fused flush doors, and door jambs. Offers specifications, binder, and some engineer drawings for download.
http://www.maiman.com

Specialty Doors
Interior doors, glass doors, sliding glass doors, acoustical doors, traffic doors, frameless glass doors, frosted glass doors, exterior folding doors, and door hardware.
http://www.specialtydoors.com/

McVeigh Insulations Limited
SIPs Structural Insulated Panels for ecological, environment friendly, sustainable building and construction. SIPs are pre-fabricated structural insulated panels that allow rapid build and deployment using innovative construction methods
http://www.mcveigh-uk.com

Cornell Iron Works - Rolling Door Specialists
Cornell manufactures overhead doors, insulated doors, fire rated doors, counter shutters, hurricane doors, security grilles, and side folding accordion products.
http://www.cornelliron.com/

Pella Doors and Windows
Premium Grade windows, patio doors, entry doors, storm doors and skylights. Available in the U.S. and Canada.
http://www.pella.com