Fits 2 rolls of 35mm or 1 roll of 120 film. 

The Paterson Super System 4 Universal Tank is constructed from high-impact polystyrene that stands up to high volume use. This tank has no hidden parts, and is always easy to keep clean.
The Super System 4 Tanks are durable, easy to use, and provide consistent, even film development.
They feature a unique snap-in light trapping funnel for quick filling and emptying, to ensure even development and precise processing times.
Super System 4 Tanks offer a choice of agitation methods; use inversion agitation, rotary agitation with the removable agitator rod supplied, or a combination of both.