Casement Windows: Advantages include a large opening area, good ventilation, good sealing, and excellent sound insulation, heat preservation, and water resistance. Inward-opening windows are easy to clean; outward-opening windows do not take up space when open.
Sliding Windows: Advantages include simplicity, aesthetics, large window size, large glass panes, wide view, high light transmission, easy cleaning, flexible use, safety, reliability, long service life, opening within a single plane, small space occupation, and easy installation of screens. Sliding windows are the most commonly used type.
Top-Hung Windows: Top-hung windows are a later development in aluminum alloy and PVC window styles. They are a new form developed from casement windows. They have two opening methods: they can be opened horizontally or pulled open from the top. When a casement window is closed, pulling the top of the window inward opens a gap of about ten centimeters. In other words, the window can be opened slightly from the top, with the opened portion suspended in the air and fixed to the window frame by hinges, hence the name top-hung.
Hinged doors come in single and double types: a single hinged door has only one panel, while a double hinged door has two panels. Hinged doors are further divided into one-way and two-way opening types. One-way opening doors can only open in one direction (either pushed inwards or pulled outwards), while two-way opening doors can open in both directions (such as spring doors). The term "hinged door" is relative to other opening methods, as doors also include sliding, tilting, roller shutter, vertical lifting, and rotating types, among others.