Vapour Tight Fluorescent Fixture
1 and 2 Lamps
“Bat Wing” Reflector

The COS4 is a vapour tight luminaire for linear fluorescent lamps (T5HO, T5 & T8). It is designed to work in damp and heavily soiled areas such as: garages, parking areas, boiler rooms, kitchens, production rooms, etc. In addition, COS4 unique esthetics also allows use in modern offices, shops and restaurants. The COS4 can be installed in both outdoor and indoor locations.

Power Range:

  • 32W T8 lamp
  • 28W T5 lamp
  • 54W T5HO lamp


Housing, latches, internal reflector, mounting brackets, all precision injection molded of UV inhibited polycarbonate resin (Bayer Makrolon™) with continuous/seamless robotically inserted gasketing. Clear or Opal diffuser of UV inhibited polycarbonate resin (GE Lexan™). Clear diffuser standard.


Fixture mounting brackets die-formed from stainless steel (2 supplied per unit).


Specular back reflector that provides better “bat wing” light distribution and performance.

Fixture Type Vapour Tight
Size 4'
Light Source Fluorescent
Number of Lamps 1, 2
Ratings IP65