This is a customized Polaroid 545i holder for 4x5 Polaroid sheet films that fits both Mamiya RZ67 and RB67 camera models. Actual image area on the film will be approximately 74 x 74mm. Includes "Tandem 77" RZ to RB adapter plate.
NOTE: This back can also be used with Kodak Readload and Fuji Quickload 4x5 sheet films.