Classroom on demand

Welcome to Classroom on demand, your source for educational materials related to the vertical transportation industry. This site represents the knowledge and expertise of the best engineers and mechanics in the elevator industry, and will help those new to the elevator industry learn about the basic workings of elevator systems, and also will serve as a reference for people with more experience.

Two-speed Door

A type of door consisting of two horizontal sliding panels which move in the same direction. The strike jamb panel travels at twice the speed of the return jamb panel and slide in back of it as the doors open and close.

Tags:  Doors entrances


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