This is a new lens board for the Durst M300 and M301 enlarger. The Nepla board has an M39 thread for modern enlarging lenses of 40mm to 100mm in focal length, such as the 50mm Nikkor-EL f/2.8 or the 90mm Schneider APO-Componon HM. Made out of ABS, it has aluminum threads for a lifetime of durability.
