LED and common downlight size and installation
Common downlight size The common downlight size specification is the same as the led downlight size, so the following applies to led downlights and ordinary downlights.
1. Opening
A No need to open holes, directly install surface mounted downlights,
Various sizes are 2.5 inches, 3 inches, 4 inches, 5 inches, 6 inches. The specifications and dimensions of B downlights are fixed, according to the basic installation method of the light source:
Downlights can be divided into horizontal (horizontal insertion) downlights and vertical installation (direct insertion) downlights. The main specifications of vertical downlights are: 2 inches, 2.5 inches, 3 inches, 3.5 inches, 4 inches, 5 inches, 6 inches; horizontal downlights usually have larger specifications, and the specifications are concentrated in: 4 inches, 5 inches, and 6 inches. , 8 inches, in addition to 9 inches, 10 inches, and 12 inches.
Dimensions of 5-inch vertical downlight: 178×204;
Dimensions of 5-inch horizontal downlight: 178×99
The inch here refers to inches, not the ancient measurement of length, inches, feet, etc. 1 inch = 25.4 mm = 2.54 cm (1 inch = 2.54cm) So:
4 inches=4 X 2.54=10.16cm. About 10cm = 100mm
6 inches=6 X 2.54=15.24cm. Approximately 15cm = 150mm
8 inches=8 X 2.54=20.32cm. About 20cm = 200mm
Let's talk in more detail
Classification of LED downlights:
1. According to the installation method: embedded downlight and surface mounted downlight.
2. According to the arrangement of the tubes: vertical downlights and horizontal downlights.
3. Divided by place: household downlights and engineering downlights.
4. Divided by the number of light sources: single-plug downlight and double-plug downlight.
5. According to the anti-fog situation of the light source: ordinary downlight and anti-fog downlight.
6. Divided by size: 2 inches; 2.5 inches; 3 inches; 3.5 inches; 4 inches; 5, 6, 8, 10 inches. Here, inch refers to inches, and refers to the caliber of the reflector cup inside.
Using downlights to make lamps is easy to install, does not take up space, is generous and durable, usually more than five years is no problem, and the style is not easy to change. The price is also cheap.
Briefly describe the downlight characteristics:
1. Compact and high luminous flux. The power consumption is 1/3 of the incandescent lamp, but the life span is 6 times that of the incandescent lamp. The compact design of 175 is maintained, which suppresses the presence of lamps and creates a bright space.
2. There are two kinds of reflectors, mirror and frosted. The mirror reflector that brings a sense of sparkle, and the frosted reflector of the ceiling with moderate brightness.
3. The sliding fixed card is adopted, which is convenient for construction. It can be installed on the ceiling of different thickness from 3mm to 25mm, and the lamp can be easily removed for maintenance.
4. There are many kinds of lamps to choose from. There are 2,700k, 3500k, 4,000k, 5500k, 6500k and other types. The most suitable lamp can be selected according to different purposes.
When buying downlights, you should consider more safety: the main problem of downlights lies in the lamp socket. The lamp socket of some brand-name downlights is not resistant to high temperature and is easy to deform, which causes the bulb to be unscrewed. At present, all lamps can only be sold after passing the 3C certification, and consumers should choose the downlights that have passed the 3C certification.
