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An electric gate is a type of gate that can be opened and closed using an ... Driveway gate openers can be the rollback (sliding) type that retracks a gate along the ...
In 1954, Dee Horton and Lew Hewitt invented the first sliding automatic door. The automatic door used a mat actuator. In 1960, they co-founded Horton Automatics Inc and placed the first commercial automatic sliding door on the market. [5] With the invention of the Gunn diode, microwave motion detectors became common in automatic doors in the 1970s.
Aluminum fence materials are often in the form of rigid rails or posts, but flexible forms are also used. Aluminum fences are made in multiple grades ranging from light weight residential to heavy weight industrial. Aluminum fencing didn’t become popular in the residential world until 10–15 years ago as it was more expensive and the ...
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