Single window
Principle: A piece of glass is pushed to the side of the balcony and turned on.
Advantages of single-opening window: full opening, 100% release of balcony space; standing inside can easily clean the sides of the glass; single glass can be rotated 90 degrees.
Disadvantages: Each piece of glass needs to be opened by a designated process port; and before opening the middle sash, its front piece must be opened.
Process: Non-linear installation is difficult and costly.
Applicable balcony: "one" shape, "L" shape, circular arc shape, special shape, full coverage of various shapes.
Double linkage window
Principle: There are hinges between every two glass, and the two pieces move together to the sides of the balcony and rotate open.
Double linkage window advantages: full open, 100% release balcony space; two glass can be opened independently at any position; two glass can be connected at a 90 degree angle.
Disadvantages: Outdoor glass is not convenient to clean.
Process: Installation is simpler and the cost is lower.
Applicable balcony: "one" shape, "L" shape, circular arc shape, special shape, full coverage of various shapes.
Push-pull frameless window
Principle: Two-track, three-track, four-track push-pull structure frameless window, multiple pieces of glass can be pushed to the sides of the balcony, but can not be rotated open.
Push-pull frameless window advantages: the maximum opening areas of two tracks, three tracks, and four tracks are 50%, 60%, and 75%, respectively.
Disadvantages: Can not be fully opened; outdoor glass is not convenient to clean; safety factor is lower than the previous two.
Process: The installation is the simplest and the lowest cost.
Applicable balcony: only for "one" shape, "L" type balcony.
Wood is divided into two distinct kinds called hardwood and softwood, though confusingly the names don't always refer to its actual hardness or softness:
Hardwoods typically come from broad-leaved (deciduous) trees (those that drop their leaves each fall, also known as angiosperms because their seeds are encased in fruits or pods). Examples include ash, beech, birch, mahogany, maple, oak, teak, and walnut.
Softwoods typically come from evergreen (coniferous) trees (those that have needles and cones and retain them year-round, also called gymnosperms. Examples include cedar, cypress, fir, pine, spruce, and redwood.
KelaiWood , https://www.kelaiwoodens.com