The VTL4-L vapor tight is a 4' luminaire ideal for a variety of industrial, commercial and residential applications. Moreover, the VTL4-L can be installed either indoors or outdoors and provides superior light distribution. Intended for applications where moisture and/or dust may be present. Above all, the VTL4-L is also appropriate for those applications that may require: washability/hose down, complete containment of the LEDs, the ability to withstand reduced temperatures and withstand moderate impact. Seals dust out.