I don't know about Elfa. I do know that the shelf standards I bought at my local lumber yard *look* at first glance to be like Closet Maid. But they are not--there's the teeniest difference in dimension, and the brackets from one won't fit in the other. So I think you're smart not to assume they'll match. (I didn't want to answer earlier, because I didn't have any direct experience, and I wanted your question to float at the top for a while so everyone could see it). Good luck! Where are you using your Elfa/Closet Maid set-up?

Here is what I did about 6 months ago and it has worked great. I've been fighting with clothes for 3 kids for 14 years. I have a large laundry room in the basement - if you do too, this will work. I got 3 sets of large, deep, heavy-duty snap-together shelves at Lowes on sale for $44 each. Each has 5 shelves that can hold 2 rectangular laundry baskets side by side - so each son has 10 baskets. I made labels and stuck them on the shelf under each basket: socks, underwear, tshirts, shorts, jeans, sports uniforms, long sleeve shirts, and gym glothes (they do a lot of sports so they have lots of Underarmour shirts & nylon shorts). Everyone has the same locations = all the underwear baskets and socks baskets are on the 2nd shelf, etc. Each still has one unallocated basket - I usually put out of season items there like hoodies in the summer. As clothes come out of the dryer, they go straight into each basket. The boys can choose to either leave everything in the basement and get dressed there, or take a weeks worth of outfits to their rooms. They do both depending on how motivated they are - my middle son is BO so he picks out a week of outfits and takes them to his dresser, the other 2 are more "dress in the basement" types. This has totally eliminated all the arguments about putting their clothes away. Each has a dresser & a closet but there was never enough room. It's also eliminated lost soccer uniforms, lost socks, etc. For sports that use the same uniform year to year, they know exactly where to find it when the season starts (their volleyball and swim teams use uniforms for 2 or 3 years). I hope this makes sense - I don't know how to upload pictures or I would post pictures.

I can tell you that the slots on the standards don't always line up. They may *look* similar, but they can be 1/8 of an inch off, in spacing vertically, horizontally, etc. I bought one brand at one store for one room, and a different brand at another store for another room. I thought, oh, I'll use this extra bracket in there. Nope--wouldn't fit. (I'll admit that one of them was Closet Maid and the other was God-knows-what from my local "real" lumber/hardware store.) So check that before you make any definite plans. You can get liners for the wire-grid baskets, I thought.

There are different qualities of bifold doors so you might want to go to a good door store and see how they felt. I have a combination of closet door styles in my home. Sliding doors (IMO) work best with relatively wide closets and even then I am sometimes frustrated a bit when I need to slide back and forth. In my bedroom I also like that they function as really good full length mirrors - as well as providing a mirror image of my views. Bifolds work well because I have complete visibility and access to the entire closet and obviously the function where a swinging door would impede egress.