Counter-space is an issue in every kitchen, and Toaster Ovens are usually part
of the problem. Even a small toaster oven takes up valuable space.
A cabinet mounted oven toaster under the cabinets can help save
precious room. All that is required to reclaim that space is a mounting
hood. This device simply attaches underneath cabinets and holds
the toaster oven aloft. Special vents deflect heat away from the
cabinets. This mounting hood can change a bulky counter top toaster
oven into a under cabinet toaster oven in minutes.

Be aware that not all models of toaster oven will fit into every mounting
hood. Black and Decker Mounting Hoods is the king of the toaster
oven mounting hood hill, and the Black and Decker Toaster Oven and
Mounting Hood are the best known in this particular toaster oven
accessory niche.

Under Cabinet Toaster Oven Mounting Hoods:

Black & Decker TMB3 Toast-R-Oven Heat Guard

Black & Decker TMB10 Toaster Oven Heat Guard

use extreme caution when mounting any electrical appliance in your
home or living space.