Underwriters Laboratories Pyle National Explosion Proof Light Steampunk Vintage.

Old Explosion Proof Light for Hazardous Conditions area made by the Underwriters Laboratories Inc and the Pyle National Company from Chicago Illinois. 

Lamp Type PS-30Cat No. LEBX-141Max 240 VoltsMax 300 WattClass 1 Groud C&DNo. 659890

Glass in not broken and no cracks on the housing. Unknown condition of the bulb but replacements can be purchased. Most of them have 120v bulbs in them but can be switched out easily to 240v

Attaches to the wall using a 3" threaded fitting. It measures 11" by 18"