Tubular Heater Guards

tubular heater
An electric heater with high surface temperatures usually used in the preheat section of the machine. Infrared radiation as well as air movement over these elements transfers heat to the tool or mandrel to be coated.

guards
(guard) a person who keeps watch over something or someone
A person who keeps watch, esp. a soldier or other person formally assigned to protect a person or to control access to a place
(guard) the person who plays that position on a football team; "the left guard was injured on the play"
A body of soldiers serving to protect a place or person
The household troops of the British army
(guard) to keep watch over; "there would be men guarding the horses"