The Glas-Col® Series TM spherical flask mantle covers only the flask’s bottom half, letting you see its full contents

All mantles are 115 Volt with the exception of the 72L which is 230V and are supplied complete with a 4-foot, 3-wire cord and locking connector. The 50 and 72L sizes are furnished with a terminal box instead of a cord. Terminal box models are available with switches and pilot lights.

Larger sizes have multiple circuits for ease of temperature control when a flask is less than half full.