>> Sky Tunnel Rigid98 Calculator

To give you an idea on how much extra light a Sky tunnel can give you, use our Sky Tunnel Rigid98 calculator below.

Sky Tunnel Rigid98 Calculator

Degree of the sun° 20° 30° 40° 50° 60° 70° 80° 90°
Diameter of the tube 343mm (13.5") 457mm (18") 535mm (21")
Length of the tube 1200mm (4') 1800mm (6') 2400mm (8') 3000mm (10') 3600mm (12')
Total reflection of the reflector 98%