Kaiser Glassless 6x7cm Masks (Pair) Tweet Description This 6cm x 7cm mask for the Kaiser compound negative carrier, used in the Kaiser System V enlargers is about 3.9" x 2.9", (100mm x 72.5mm). Details Additional Category Tags: Enlargers & Accessories, Enlarger Head Accessories Category: Photography Manufacturer Catalog Number: 204436 Product Manufacturer: Kaiser Subcategory: Darkroom Equipment