We are using the WAC puck lights they are about 1" deep. My light rail isn't installed yet and you can't see the pucks. Are you installing a light rail? this will help hide the lights.

Here is a link that might be useful: Puck Lights

1" was the thinnest I could find (and paid a premium for getting rid of that extra 1/2"). I don't think it would be possible to produce something less than 1" thick. As it is, I have to hunt down special-sized cable clamps for the wiring.

Options - Cut a recess out of the bottom of the cabinet? Add additional molding on the bottom of the cabinets? I'm not sure how much that 1/4" would really show.

I mounted my lights at the front.

Light rail is used to hide under cabinet lights (as well as give cabinets a more "finished" look). I think it's going to be tough, if not impossible, to find anything thinner than 1"...you need room for the light source & housing. Do you plan to install light rail?

As to placement...I think the best place is the front to light up what you're actually doing....which will not be against the wall! Also, the further back you put them, the more noticeable they will be from the kitchen.

Wall is the "bottom" of the pic.

We have a really thin mini-LED strip from Ikea- I think it's about 1/4" thick. We just installed an outlet in the back of a cabinet and use the switch, although it's not the most elegant solution.

I googled and found quite a few choices though. One link is below.

Here is a link that might be useful: LED light bar

I didn't think LED lights could be dimmed, but the linked site seems to say differently.
When three or more sections are snapped together, light levels are dimmable form 100% to 0%Why do you need 3 or more sections to dim?

I have 1'' thick fluorescent strips mounted in recess (3/4'') of my cabs--towards the back--and you can't see them.

W.A.C. makes a fluorescent u/c light that's 7/8" thick. Don't know how it wires up though...

We used a stack molding vs. light rail - thought we were going to use as top molding and didn't so it worked well. It is thin enough to not be too noticable but nicely covers the lights. I doubt you'll find anything to 100% cover the lights.

Thanks for all of your suggestions and input. Glad to hear from some of you that the 1" lights aren't necessarily the end of the world in my case.

charlikin thanks for the tip about the WAC lights. I'm going to google them now.

We have LED strips from Environmental Lighting. They are very thin, super energy efficient and give a great color light.

Here is a link that might be useful: LED Lights

As a kitchen contractor, my preferred undercabinet lights are Hela fluorescent strips, mounted towards the front (so the light shines down on your work area, not from behind) and hardwired. They are the smallest lights that I know of, and what we are using in our kitchen remodel.
Mike Miller, Miller Renovations

cocontom - where did you find LED from Ikea. The only lights I could find there were halogen. Do you know the name of the lights you purchased?

Here's a link:
Ikea LED Light

Cocontom, do you find your LED lights bright enough, and is the color warm or cool?

Seems like a pretty good price for the set of 4.

Dawn

Thanks dawn_t- I'll take a look.