This document discusses different types of doors and windows. It provides details on revolving doors, sliding doors, and windows. For doors, it classifies them based on their arrangement of components, method of construction, and working. It describes types of sliding doors like bypass, surface, and pocket. For windows, it covers sliding and pivoted windows. Sliding windows move horizontally or vertically on rollers while pivoted windows swing around fixed pivots. The document aims to inform about various door and window configurations and mechanisms.