I have few transitions (hardwood to floating laminates) that are not at the same levels (there is 3/8 or 1/4 difference between each level). I would like to install T-molding but most of the T-moldings available in stores are for the floors that are at the same level. Where can I get something that would cover 3/8 or 1/4 difference. Am I forced to go custom $$$$ ?
Appreciate any advice

All T-mouldings are used to transition different levels. The difference your talking about shouldn't be an issue. It's a matter of setting the t-moulding at a good location. For instance on a 3/8" difference set the leg closer to the lower product, ( play with the location so it sets nice ).

I don't think I understand. If I position the left horizontal side of the T molding on the higher level floor I will have say 3/8 gap under the right side of the horizontal part of the T molding that will hang over the lower level floor. May be I did not express myself correctly. The difference in levels is at the joint between two floors. There is a "step down" when you go from one room to another.

This situation is becoming more and more prevalent as time goes by, and a lot of trim manufacturers have stepped up to deal with the situation by making a variety of "off-set" t-moulds. There should be a trim shop somewhere in you vicinity that can help you with this,

Typically when your figuring on using a t- moulding, you would leave approx. a 1" gap between the 2 surfaces. Using this method a t-moulding will transition a 3/8" height difference.
If I'm reading your situation correct and there's no 1" space between surfaces...You should still be able to cut the leg off the t-moulding and it will transition.
You can also use a reducer by rabiting out one side to go over the 3/8".

The only problem with going to a "trim shop", is that you usually run into issues matching most pre-finished floors.

Yes, I do have1 inch gap between surfaces, that is not a problem. The problem is to find "off-set T molding Dennis was talking about. I do not think you are suggesting regular T molding tilted in such a way that it rests on two surfaces.

Anybody knows trim manufacturer or on-line shop that sells off set T molding.

Thanks

Well, I sell 'em, but I am Toronto area. Could purolate them to you if all else fails for you.

If the drop is significant enough you can always just reverse a reducer. Shave it if you need to get it to the correct height. But be careful if your doing it on a table saw. I had one piece get sucked into the saw. That was a scary moment but I was able to pull it out.