A Paterson Multi-Reel 3 Tank complete with the MOD54 sheet film holder to enable processing of up to 6 sheets of 5x4" film. The MOD54 film holder has grooves which take 3 sheets of film per side. These hold the film securely to ensure even development. It fits on to the spindle supplied with the Paterson Multi Reel Tank 3. Inversion of the the tank about every minute is recommended, and only 1 litre of solution is required. Easy to load, and is much more economical with chemistry than traditional deep tanks.