Don't let your electronics inside control panels and other enclosures freeze or be ruined by condensation! 
With an exposure temperature range of 32ºF- 450ºF (0 - 232ºC), these heaters are also resistant to moisture, chemicals and radiation.  Construction includes a heating element laminated between layers of fiberglass reinforced silicone rubber, for an overall thickness of 1/4", as well as two 7/16" holes for mounting in an aluminum mounting plate.