Hollow metal windows, or borrowed lites, are available in many sizes and configurations. The most common hollow metal window frames are four-sided frames and have one or more sections of glass installed. When multiple sections of glass are specified they are separated by "mullions" when built. Hollow metal windows can be fire...
Automatic door openers use electricity to power a motor inside the unit to open the doors. The auto opener is often referred to as an auto operator or low energy operator (read this previous blog post on the basics of auto operators). Low energy refers to the speed and force of the door opening swing. Auto openers will slowly open the...
As we enter the new age of technology and witness futuristic dreams of the past becoming realities, it is not hard to notice that the next big thing in tech is automatic sliding doors such as those seen in the popular TV series Star Trek. It won't be long until these automatic sliding doors are commonplace in public and at home. The...
Common Door and Hardware Abbreviations and Terms
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