Also known as variously as a sun tube, sun tunnel, light tube, or tubular skylight.
A solar tube is a 10- or 14-inch-diameter sheet-metal tube with a polished interior.
On your roof, a solar tube is capped by a weather-proof plastic globe. The tube ends in a porthole-like diffuser in the ceiling of a room below.
Pros :
+ Save money for electricity
+ Natural source of lighting with no heat gain or Glare.
+ Almost no repair & maintenance.
+ Won't Fade your furniture or clothing.
Cons :
+ It needs ample space for tube lighting.
+ Some of these solar tube lightings can cause pollution
+ Cost of installation.
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