Darkroom Door - Rubber Stamp Set - Ransom Alphabet. Darkroom Door Rubber Stamp Sets are mounted on cling foam and supplied in a DVD size storage case with a labelled spine for easy identification. Darkroom Door rubber stamps are known for their durability, deep etching and high image detail. Designed by Rachel Greig. Made in Australia. This package contains one rubber stamp set. Size 7.3x5.1 inches. Imported.