Can anyone explain why a 42" tube gives off more light than the 48" ? Here is part of the table from arcadia for working out what size reflector you need:
Overall Reflector Size:........Fluorescent Tube Size:
830mm/32.7" ....................30W/900mm/36"
884mm/34.8" ....................38W/1050mm/42"
1047mm/41.2" ..................36W/1200mm/48"
Overall Reflector Size:........Fluorescent Tube Size:
830mm/32.7" ....................30W/900mm/36"
884mm/34.8" ....................38W/1050mm/42"
1047mm/41.2" ..................36W/1200mm/48"