The 200G is the correct humidifier pad filter that fits the following whole house, drum-type humidifier systems:
The AutoFlo 200G Humidifier Pad Filter Replacement is an absorbent paper pad made of antimicrobial paper with an aluminum support layer to keep the belt from sagging. Also known as part number A22W, this AutoFlo humidifier evaporator pad offers 20% increased output in humidity over foam replacement pads. This evaporator pad produces 15 gallons per day and is 100% water efficient. Installation is quick and easy. During the humidification season and for optimum performance, replace your AutoFlo Humidifier Pad 2 times, based on usage. This paper pad includes 2 velcro strips used to tie the ends of the belt together.
Autoflo Humidifier Water Pad specifications:
Be sure not to over-humidify. Cold air is not able to hold as much moisture as warm air. Cold drafts seeping through windows and doors could cause water vapor to condense at these points of entry. If your home is well insulated and weather stripped, but lacks effective vapor barriers, water may seep through the ceilings and walls. Moisture may condense in the attic, inside or outside of the walls. Humidity levels should be reduced before water damage occurs, if you notice any of these moisture related conditions.