The Hamilton WP 041 is the correct replacement plastic water pan for the following humidifier models:
The Hamilton Plastic Water Pan for 4D WP 041 is a replacement water pan for the Hamilton Model 4D Drum Style Humidifier. This Hamilton water pan is also compatible with select humidifier models from Montgomery Ward, Skuttle, and White Rodgers listed above. The Hamilton WP-041 water pan is a genuine Hamilton 4D replacement part that ensures the proper flow and drainage of water in your unit.
Hamilton Plastic Water Pan for 4D WP 041 specifications: