A cover for a rack to control the temperature of the contents of the rack is
provided.
The cover comprises a frame having a heater, a soft hood with a top and a bottom,
the hood extending downward from the frame, and a duct fluidly connecting the heater
to the bottom of the hood whereby the duct introduces heated air into the bottom
of the hood. Also included is a method of controlling the temperature of a reaction
using the cover of the present invention.
