Thank you for the question. If the under cabinet light fixtures requires the size and wattage. Yes you can use use under the cabinets.
Thank you for the question. If the grill uses 12v. Yes, the halogen bulbs are suited for high heat appliances.
Thank you for your question. Yes, this Feit Halogen Light Bulb can be used in a hood above a range. Please make sure to contact your appliances manual for recommended bulb type and other specifications.
Thank you for your question. As long as the bulb specifications match, then yes.