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Learn about the history, types and features of garage door openers, from the first electric opener invented by C.G. Johnson in 1926 to the modern wireless systems. Find out how garage door openers work, what are the advantages and disadvantages of different types, and how to secure them from intruders.
The Genie Company is an American manufacturer of garage door openers and accessories, founded in 1923. It is a subsidiary of Overhead Door Corporation and has its headquarters in Mt. Hope, Ohio.
Learn about different types of garage doors, such as sectional, roller and swinging, and their advantages and disadvantages. Find out how garage doors are made of various materials, such as steel, aluminum, wood, fiberglass and vinyl, and how they can be insulated for thermal and acoustic performance.
A dedicated outdoor air system (DOAS) is a type of HVAC system that delivers outdoor air ventilation and conditioning separately from indoor sources. Learn about the advantages, disadvantages, and applications of DOAS, and how it differs from conventional VAV systems.
Chamberlain Group is a subsidiary of Blackstone that designs and engineers perimeter access products, such as garage door openers and security cameras. It also distributes Controlled Products Systems Group, the largest wholesale distributor of perimeter access control equipment in the US.
A roller shutter is a door or window shutter with multiple horizontal slats that can be lifted or lowered. Learn about the different types, applications and components of roller shutters, such as steel, aluminium, springs, locks and guides.
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