The Print Holder is made of pinseal ABS and holds a print flat throughtout the developing and wash process.
Print Holders only fit pods of equal size or larger.
It is possible to process prints of a smaller size than indicated on the Print Holder, for example, a 10"x8 print can be processed on a 12"x16" holder but this is not recommended.
The Tester option is used for small trial prints, it may in some circumstances slightly damage the print surface. It can grip any size print but does not hold prints flat.