The GeneralAire 7581 is the correct replacement orifice for the following humidifier models:
The GeneralAire GA4299 950 Humidifier Orange Orifice is a replacement orange orifice for GeneralAire Elite Models 950, 950X, and 1099LHS. The GA4299 orange orifice attaches to the GA4235 distributor tube along with the P190 compression sleeve (plastic) and P101 compression nut. This is a genuine GeneralAire replacement part and is a crucial component of your humidification unit.
GeneralAire GA4299 950 Humidifier Orange Orifice specifications: