Here's the scoop. There is a Huge difference in how much light is delivered into your room, Solatube win's by a mile, period. Solatube invented the light tunnel concept and has 2 very important differences;
1) The "bowl" on top has a patented prism system much like a light house prism. All other light tubes simply have a plain glass bowl. So? At 9am in the morning the sun light is not being directed down the tunnel with all other brands and you get far less light than the Solatube, their prism redirects the light straight down the tunnel. The prism design also prevents the noon heat from penetrating the system.
2) Solatube has a patented film on the inside of their tube that the light can bounce off of even around corners delivering (3rd party testing) 97% of the natural light into the room where as all the others average only 45% to 55%.
1) The "bowl" on top has a patented prism system much like a light house prism. All other light tubes simply have a plain glass bowl. So? At 9am in the morning the sun light is not being directed down the tunnel with all other brands and you get far less light than the Solatube, their prism redirects the light straight down the tunnel. The prisum design also prevents the noon heat from penetrating the system.
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