What does PAR 20 light bulb mean?
Parabolic aluminized reflector
Parabolic aluminized reflector (PAR) 20 bulbs control light more precisely. They produce about four times the concentrated light intensity of general service A shape incandescents, and are used in recessed and track lighting. Like all light bulbs, the 20 value represents the diameter of the bulb in 1⁄8 of an inch.
What is the difference between PAR20 and PAR30 light bulbs?
PAR20 bulbs are most often used for interior lighting fixtures. Recommended when redesigning your kitchen, highlighting smaller artwork, single shelf presentation, product display in retail, etc. PAR30 bulbs are ideal for track lighting fixtures and recessed can applications.
Are PAR20 and PAR30 bulbs interchangeable?
PAR30, PAR20, and PAR16 bulbs are great replacements for incandescent bulbs but can easily replace other LED bulbs, such as BR (Bulged Reflector) bulbs. PAR Bulbs and BR bulbs are virtually interchangeable as far as the fixture, but the type of light they produce is much different.
Is R20 bulb same as PAR20?
Either way, the bottom line is that a PAR20 and R20 bulb are the same size and can be used in similar situations, but the PAR20 will be better when more focused light is desired and an R20 will be better for more diffused light and general lighting situations.
What is the difference between BR20 and R20?
R20 can either be a PAR20 or a BR20. The main difference between the 2 is the beam angle of the light. BRs spread the light with a 120 degree beam angle, while PARs create a focused light with 40 degree beam angle. 9 of 11 found this helpful.
What is PAR20 vs Par38?
While the Par20 will fit in any can over 3 inches, the 4.72-inch diameter of the Par38 means it can only be used in cans over 5 inches. They both typically have an E26 base. Some of the similarities include a range of Kelvin depending on the warmth of light you are looking for.
What does BR30 mean?
The difference between a BR20, BR30, and BR40 is actually the size or diameter of the light bulb. The number represents increments of an 8th of an inch. For example, a BR30 is 30/8ths of an inch or 30 divided by 8 which equals 3.75″ in diameter.
What is the difference between R20 and BR30?
Don’t worry about it because the two are interchangeable! R20 is the name for the incandescent bulb while BR20 is the name used for LED bulbs. In case you were curious, “BR” is short for “bulged reflector” which means the back of the bulb is a reflector and the front of it is bulged out.
What size are R20 bulbs?
2.5 inches
Like all light bulbs, the 20 value represents the diameter of the bulb in 1⁄8 of an inch. Therefore, a R/BR 20 light bulb is 2.5 inches in diameter.
How much PAR does a plant need?
To optimise your grow it is recommended that your plants receive 500-1000 µmols of PAR light for every m² (PPFD). Less than this and growth rates will be low. Higher PAR intensity for your plants than this and the increase in growth rates do not justify the extra energy cost.