What are the diameters of downlights, spotlights and ceiling lamps?

Downlight fixed size. There are generally three types of downlights: large (5 inches), medium (4 inches) and small (2.5 inches).

The major diameter of the spotlight is 1 1.5 cm, and the minor diameter is 9 cm.

Ceiling lamps come in different sizes and diameters.

There are generally three types of downlights: large (5 inches), medium (4 inches) and small (2.5 inches). The market price of small size is between 25- 15 yuan, medium size is between 28-32 yuan and large size is between 36-48 yuan. Of course, the above prices do not include light sources. There are two types of downlights: horizontal plug and vertical plug, and the price of horizontal plug is a little more expensive than vertical plug (even if it is the same material).

Extended data:

Dimensions and specifications of downlight:

Answer: Downlights can be installed directly without holes, and there are 2.5-inch, 3-inch, 4-inch, 5-inch and 6-inch sizes.

2.5-inch outer diameter dimension: 9. 1 cm, 3-inch outer diameter dimension:10.8cm.

B: The size of downlight is fixed. According to the basic installation mode of light source, downlight can be divided into:

Horizontal downlight and vertical downlight. The main specifications of vertical downlight are: 2 inches, 2.5 inches, 3 inches, 3.5 inches, 4 inches, 5 inches and 6 inches;

Horizontal downlights are usually large in size, concentrated in 4-inch, 5-inch, 6-inch and 8-inch, and also have 9-inch, 10-inch and 12-inch.

Dimensions and specifications of spotlights:

20, 30, and 38 denote the maximum outer diameter dimension.

For example, for 38, the maximum outside diameter dimension is (1/8) * 38 * 25.4 ≈120.0mm38, and the conversion relationship is as follows:

1 inch = 1/8 inch 1 inch =25.4 mm.

References:

Baidu encyclopedia-downlight