Wayne-Dalton
Wayne Dalton is manufacturer of America's Safest Garage Door Systems for residential and commercial garage doors and garage door openers.
http://www.wayne-dalton.com/

Foothill Doors
Full service for garage door openers and garage doors. Pasadena and the FOOTHILL areas.
http://www.foothilldoors.com/index.html

Garage Door Openers Inc
Garage Door Opener Parts is your Liftmaster and Chamberlain parts and service center offering replacement parts, remote controls, sensors and logic boards for your garage door opener. We specialize in garage door opener parts from Lift Master and Chamberlain and Sears garage door openers.
http://garagedooropenerparts.net/

Powell industry
china manufacturer and supplier of Air Tools Pneumatic Tool Die Grinder Air Drill Cut-off Coupler Tire Inflator Blow Gun Air Wrench Impact Air Sander Hammer Air Screw Driver Shear Tool Kits Garage Door Operator Opener
http://www.chinapowell.com

i-Opener Info Index
Information and links on how to modify the NetPliance i-Opener so that it becomes a fully-functional computer (preferably running Linux!)
http://www.evernex.com/iopener/

I-Opener Info Page
Quick guide to information about the I-Opener.
http://www.ringworld.org/~teuobk/iopener.htm

I-Opener FAQ
This is a general-purpose hardware/software FAQ for modifying the I-Opener Internet appliance.
http://fastolfe.net/2006/iopener/faq

Von Duprin
Von Duprin manufactures the widest range of exit devices and outside trim operations, including rim-type and mortise lock, surface and concealed vertical rod, fire-rated and several electrical options. Security-related products include a full line of electromagnetic locks, electric strikes, card readers, and keypad-type access control.
http://www.vonduprin.com/

Curtis Door Systems
Train door system manufacturer. Manufacture electrical, pneumatic, sliding pocket and sliding plug doors.
http://www.curtisdoorsystems.com/

Heritage Brass
M-Marcus offers a comprehensive range of door furniture like levers, knobs, Pull Handles, Letter Plates, Knockers hooks in finishes like Chrome, Brass
http://www.m-marcus.com/