I installed a 33" drawer on full extension soft closeing slides a couple of weeks ago, works great, Now I have 17 more to do.
p.s. I can tell you that installing them into exixting cabinets that where made 55+ years ago without them in mind is no fun at all. Also in a house that was moved 75+ years ago and henceforth does not have a square corner or plum wall in it. The house settled about 4 inches from front to back after the move And it is downright painful squeezing your fossilized body into those holes in order to screw them in place level and square. Not enough arms & hands, Oh and having to use those plastic mounting pieces to mount them to the face frame and in the back where there is nothing to attach them to. Nope, no fun at all.
There is however plenty of time because I AM RETIRED, Have I told you that before, I think I have. I am RETIRED and I just love it. That's right I was tired yesterday and I am tired today