Prefilter for the White-Rodgers Electro-Air Thru-The-Wall Series 1000 cfm air cleaners. These filters have an aluminum frame with an aluminum mesh filter. Measured size of 13½ x 22¼ x 5/16 inch. Please measure your prefilter dimensions for accuracy.
One of these prefilters are in the model TTW1000 or 10C13T-410. This prefilter is genuine White-Rodgers.