Sheldon Signature General-Purpose Incubators Accessories. Signature Shelf is 19 inch wide and 19 inch long 19mm thick and is anodized with an anti-tip notch. Incubation shelves are a must for proper hatching of certain types of insects including roundworms tadpoles frogs and gerbils. Sheldon Shelf is a Sheldon exclusive offering premium shelving and an excellent finish for a superior shelf in a Sheldon incubator. Sheldon brand products are developed and built with the quality that you have come to expect from Sheldon. Sheldon incubator shelves are used widely in research laboratories and industry worldwide. Sheldon incubator shelves can be used in incubators designated for hatching eggs brooding trays or for isolating and culturing insect parts and vaccines. Sheldon brand name is recognized for the consistent quality of its products. Sheldon storage shelves are just one more example of Sheldon 's commitment to quality. Sheldon Signature General-Purpose Incubators 5130523 Accessories