Rooms with an average DF of 2% or more can be considered daylit, but electric lighting may still be needed to perform visual tasks. The higher the DF, the more daylight is available in the room.
Do use commas if the time zone is spelled out ( 2:30 p.m., Eastern Standard Time ). 'Manual Control Only': This option is suited for manual control of brightness and color temperature, without automatic control. Lengths: Available in lengths up to 8m (1.6) and 6.76m (1.0) Application: Suitable for roof pitches of 4 o or more after deflection. Abbreviations for time zones may be enclosed in parentheses or brackets, but don’t enclose them in commas ( 2:30 p.m. Solar Heat Gain Coefficient: As low as 0.44.
We also sell sun tunnels, blinds and shutters. We sell roof windows for pitched and flat roofs to bring daylight and fresh air indoors.