The cabinet below my master bath sink has an HVAC duct that runs directly underneath it and vents out below the doors. When my heat is running, the cabinet gets very warm and essentially melts anything in there (soap, shampoo, lotion, plastic bottles, toothpaste, etc.). I need suggestions for ways I can still use this space for much needed storage and mitigate some of the heat. Is there any kind of heat reflective panel I can cut to size to lay on the base of the cabinet to keep it from warming up so much - is this even safe or would it deflect to much heat to the wood and become a fire hazard? Any other ideas anyone may have so I can still make use of the functional storage space?