I don’t know what you want are you doing bypass or barn doors yes a 72" barn door track would work I have to say bypass doors for a laundry closet would be my last choice all that moving doors to get at W/D would make me nuts. I have a laundry closet but I have folding doors that open the whole space when I am doing laundry. Waht do you mean by hidden hardware.

By hidden hardware I mean for regular bypass doors that mount within the door opening. That was my first choice, but because the opening is an odd size, I cant find hardware to fit. As opposed to barn doors that mount on the wall face above the doors, what I think I must go to. This closet is built in a corner of the bathroom, so the length of the actual track (barn door track) has to be no longer than

80", the overall length of the front of the closet. There really isn't room for folding doors.

If you're having the doors custom built, you could always buy two shorter tracks to equal your length. When mounted, they should line up so the doors will slide smoothly. Or get the double bypass set and cut it down. The rollers and other hardware needed are based on the weight of each door, and the spacing required.

For utility room purposes, this company has just about every configuration:

https://johnsonhardware.com/sliding-bypass-door-hardware

That's very helpful! Thanks.

@Mary Elizabeth Do you know if it's okay to paint bypass doors? One company said that would void their warranty because the paint might get into the tracks.

@Mary Elizabeth Have you been happy with them? I just read a SFGATE article that recommended replacing them with bifold doors or doors that open outwards because of the many problems with them.

@lenorae11, each situation will be different. It usually depends on the amount of space you do or don't have, plus what access you need.

Doors that swing need alot more room than either bifold or bypass.

I'm not a fan of bifold doors, so would only use them if nothing else would work.

I think they are much more trouble than bypass doors, as the hardware is not as supportive.

My husband substituted these for the regular plastic guides:

Amazon.com: JUBEST Stainless Steel T-Guide for Sliding Barn Door Hardware Floor Mount Set of 2 : Tools & Home Improvement

They do require a routed groove in the bottom of the door.

@mary Elizabeth Thanks for your advice!

My daughter and I have had great luck with bifold doors. I think I’m going that route.