We have the Miele fridge/freezer that are just like the Thermador columns. We have custom panels and just used the same hardware as we used on the cabinets for the handles just larger. We used Alno hardware.

We have a paneled bottom freezer built-in Thermador and in the end decided to use regular Thermador refrigerator handles - mainly because the cabinet hardware we were using did not come in a size appropriate for the refrigerator and freezer. If I could have, I would have matched the cabinet hardware.

We have a paneled Liebherr and went with pulls similar to our cabinets in a thicker, heavier size. They were not listed under cabinet hardware, but under door hardware as "grips and pulls" Ours are "sash grips" by Rocky Mountain Hardware in Silicon Bronze, and for the cabinets they are called sash pulls.
I really like the soft feel of this handle as well as the look.

Here is a link that might be useful: Door and cabinet hardware

This post was edited by ctycdm on Thu, Jun 19, 14 at 13:31

I have been to this place linked below a few times and they have tons of pulls, knobs, cabinet and door hardware.

Here is a link that might be useful: Raybern Hardware

We have Thermador paneled frig and freezer columns with Amerock Revitalize appliance pulls.

You might also be able to use a shower door pull for a refridge pull. I am thinking of doing that because the square pulls that I used for the drawers in the kitchen are not sturdy enough for the refridge.

If you want impressive, you can also look for pulls meant for office doors, church doors, etc.

Placement is most important--the farther away from the hinges the more leverage against the pressure seal you'll have. A long handle accommodates more heights. Optimal hand placement for pulling is about halfway between shoulder and elbow.

I had mine custom made in a bigger size (3') to go with my other, smaller, appliance pulls, which is an advantage one has when dealing with an artisan.