Sun-North Systems Ltd. Provides natural venilation systems for all livestock building types, including insulated chimney, curtains and side wall sliding panels. Ontario, Canada. http://www.sunnorth.com/

R.A. Krouse Specializes in the construction of timber frame homes, barns or commercial structures in the New England - Maine area. http://www.mainetimberframes.com/

MD Enterprises Inc. A long established supplier offering the design, manufacturing and installation of pre-engineered farm and agricultural barns. http://www.mdent.com/

East Coast Barn Builders Restoring and moving antique barns. http://www.ecbb.com/

Handi-Klasp Barns Complete barn kits and accessories including mats,automatic waterers, feeders, gates and fencing. http://www.handi-klasp.com/h_barn.htm

Peoples Builders of horse barns east of the Mississippi River. Offering a combination of custom design and standardized layout units for a finished structure that matches your needs. http://www.peoplesbuilding.com/

Shelters To Go Portable Shelters used for rain, shade, animal shelter, hay covers. Easy to put together. http://www.shelters-to-go.com/

Patrick and Mary de Saulles Chartered Architects; ARIBA, FCSD, FRSA. A small firm providing personal service to public and private clients for the conversion or restoration of barns and redundant farm buildings. http://www.mdes.co.uk/barns.htm

TimberStead Specializing in timber frame barns, bridges, sheds, storage buildings and cabins. Offering blueprints for your building, along with instructions for crafting it, or you can purchase a precut kit. http://www.timberstead.com/

Greenhouse Supply, Inc. The exclusive U.S. distributor of Harnois brand livestock structures. http://www.agrotech.com/

Tri-County Barns Distributor of Barnmaster stables, fly systems, fences, and horse walkers. Based in Tomball, Texas. http://www.tcps.com/

CEEC Inc New construction, design, repair and maintenance of grain storage systems. Crane rental available. http://www.ceecusout.com/

National Horse Stalls Providing builders and their clients with stall equipment available in many price ranges.  There are eight standard styles of stalls plus the ability to do custom stabling. http://www.nationalhorsestalls.com/

Friesen Of Iowa Inc. Agricultural and commercial storage units such as grain bins, bulk seed tenders, commercial silos, stainless steel bins, hopper cones. http://www.friesenofiowa.com/

DeMuth Silo Hardware Manufactures specialty steel products, precision engineered for use in the construction of concrete silos and tanks. http://www.demuth.com/farm.htm

Character Building Company Builders of traditional English Oak barns and country out-buildings. [South Coast of England] http://www.characterbuilding.co.uk

Bar-c-Barn Barns Horse barn builders. Authorized distributor for Barnmaster barns in Alabama, Louisiana Mississippi, Tennessee and Georgia. http://www.bar-c-barn.com/

Barnmaster Barns Modular prefabricated barns designed by horsemen for horsemen. Horse barns of various designs, accessories, corrals, round pens, garages and hay barns. http://www.Barnmaster.com/

Quality Steel Buildings Inc. General contractor for pole barns, metal and all steel building kits for agricultural, equestrian, shops, garages, and turn-key projects. http://www.qsbinc.com/

Panhandle Steel Buildings, Inc. Metal buildings contractor in Amarillo, Texas http://www.psb-inc.com/