It's the level of ozone it produces. And they use a UV light to do it not an electrical discharge.
"The RGF Residential Ozone Air Purification Plan utilizes a "passive" ozonation level at or below the Federal government recommended level of 0.04 ppm for occupied areas. The Pure Air by RGF® line of ozone air purifiers has been designed not to exceed the legal levels for occupied spaces while providing adequate airborne purification with several different models capable of various sized treatment capacities.
The Pure Air by RGF® systems have demonstrated in lab tests greater than 90% reductions of airborne microbials while staying within the legal limit of 0.04 ppm. Air contaminants can be controlled utilizing a safe, low level of ozone.
The popularity of the Pure Air by RGF® systems is unprecedented - The Pure Air 2500 by RGF® was recently featured in the February 1998 issue of Popular Science being credited as the only system meeting federal guidelines, and an indepth three-part newscast series was broadcast on Fox 29."
Preping, in a very small space, for the welding of the new genset exhaust pipe nibbles that attach to the main exhaust outlet at the transom.
Dry cutting the granite counter top fot the new cooktop and pop up vent system. Yes there is a man with a saw under that dust bag.
Wooden mock up of the new model 150 Rocna anchor for test fitting to the bow roller. The new anchor will weigh 331 lb.
The old and the new anchor windlass wildcats.