Finlandia / Harvia Part # FH89 or ZSK-752 Bulb Cover provides dedicated protection for the temperature sensor in KV sauna heaters, helping it deliver stable, accurate readings over years of use. By enclosing the sensing bulb inside a heat-tolerant shield, this OEM cover reduces exposure to direct radiant heat, drafts, and accidental contact that can shorten sensor life or distort temperature control. Its form is matched to Finlandia and Harvia KV models for a secure fit and predictable performance once installed. Made from durable, sauna-ready materials, the cover stands up to repeated heating cycles and high humidity without warping or cracking. Whether replacing a missing or damaged guard during maintenance, this bulb cover is a small but critical component for preserving safe, consistent heater operation.
Finlandia / Harvia Part # FH89 or ZSK-752 Bulb Cover provides dedicated protection for the temperature sensor in KV sauna heaters, helping it deliver stable, accurate readings over years of use. By enclosing the sensing bulb inside a heat-tolerant shield, this OEM cover reduces exposure to direct radiant heat, drafts, and accidental contact that can shorten sensor life or distort temperature control. Its form is matched to Finlandia and Harvia KV models for a secure fit and predictable performance once installed. Made from durable, sauna-ready materials, the cover stands up to repeated heating cycles and high humidity without warping or cracking. Whether replacing a missing or damaged guard during maintenance, this bulb cover is a small but critical component for preserving safe, consistent heater operation.