Knobonly 1 Pair 18" Soft Close Drawer Slides, Zinc Plated Under Mount Drawer Rails Full Extension, Come with Mounting Screws and Brackets, Concealed Cabinet Furniture Drawer Runners

I was looking for "DTC 533 R" replacement for a long time. Finally, I met this product. I wish there were more descriptions on the critical sizes on product page, but I gave a try. Bingo! It worked very well and smooth. One key critical dimension is that:- This product has 1/8" smaller gap between moving rail and sidewall frame than DTC 533 R. I compared these two side by side. I had to add a nut and washer to make this space (plz see pic). Hence, the rail must be precisely parallel (not difficult) and final alignment will have 1~2mm clearance from the sidewall frame (see last pic). Otherwise, this is a good value product.One more comment: This product is a little shorter than "DTC 533 R", but the back mount part is long enough to cover this difference. No problem (see 1st pic)

I had hesitated to try installing slow close drawer sliders, thinking it would be too difficult. So the package of 10 I purchased on Amazon sat in the garage for two months. Today I decided to see if I could install one. A few hours later I had installed all 10. It was significantly easier than anticipated.The slow close sliders work perfectly. I decided I am capable of installing another 15. Highly recommended.Bear in mind, the instructions are of minimum guidance.

The media could not be loaded.  Works very well good product I'm very happy

I’ve been making cabinets for more than two decades. These slides represent superb value.

SUGGESTIONIf you are installing new drawers, and you have at least 1/2" clearance on both sides, I highly recommend considering SIDE mounts - they are MUCH easier to install. In my case, I did not have that clearance, and I bought these to replace the existing hardware which had failed. (FYI: The point of failure was the clip which is mounted towards the face of the drawer on the underside. The original was made of plastic - similar to the ones included in this unit).SUMMARYMy rating is based on the following: poor design making installation difficult, no provided instructions until requested and finally, even when instructions are provided, of little to no use. Have included a few pics to help visualize the components I'm writing about. Elements of poor design making installation a challenge:1. Alignment of backside and frontside of drawer to respective points of fixture (hooks in the back, clips in the front).2. Slide mounts require holes to be drilled in the back of the cabinet. This can be challenging to do as working inside of a space where a drawer is supposed to go is not easy. The mounts have to be screwed in, which is necessary...designing them so that drilling holes is required - yeah, not good.DETAILSFirst of all, these come with no instructions - just a cryptic engineering diagram that is pretty useless. I contacted the seller and upon request they sent me some detailed instructions. Unfortunately those instructions didn't really help.Here's reason #1 the design makes the installation a BIG challenge: there is no provided way to line up how the back of the drawer is fixed with how the front of the drawer is fixed to the slide.Back Alignment:In the back, the slides have a "hook" that is supposed to go into a hole one has drilled into the backside of the drawer. The challenge is that the only way to know exactly where that hook will be on the backside of one's drawer is to install the left and right slides into the cabinet, and then measure the distance, and transpose that to the backside of the drawer. Not impossible, but not template exists for this measurement because everyone's drawer may be a different width! So, you better be precise in making that measurement!Front alignment:This is the really tricky part! Once the backside is aligned, one would think this is a piece of cake! Not so. Because the front-side hardware are clips...you have to "clip" them on to the slide, and then place the drawer so its backside is in the hooks (where it will ultimately land). Then, you have to mark the place where the clips are and then install the clips. In order to make this mark, the drawer should be in the installed position (within your cabinet), or as close to as possible. Doing that with any drawer is a challenge (to mark, while it is in position but not yet fixed). The hard part in my case was: this is a bottom drawer...I had about 2" of clearance to work underneath and make the marking correct. Oh, and in order to make this marking, the drawer CANNOT be pushed all the way in. Why does that matter? Well because how else will you make sure the front of the drawer is aligned and evenly covering the cabinet frame?In the end, I ended up taking the slides out of the cabinet (after having installed them once), and making this marking while the drawer was NOT in its cabinet space. What's the danger with this approach? Well you lose the fixed width where your hooks will be...so you have to just guess on the 1/4" to 1/2" clearance of where you think the slides will be vis-a-vis the drawer.All in all, just TOO many variables in 3 dimensions to line up. I got mine installed, but the front of the drawer leaves a gap and exposes the frame of the cabinet. :/Reason #2The slides which are fixed inside your cabinet come with a plastic clip that is mounted to the back wall of one's cabinet. They have designed this piece in such a manner that one has to drill holes for it to sit flush on the wall, whereupon it is mounted with ordinary screws. I suppose this is to give the drawer it's weight rating of 35 lbs...but here's the challenge: just imagine drilling a hole that has to be exactly 1/4" in depth. If your cabinet is up against a wall maybe you don't care and will drill a hole all the way through as it won't be seen. But if your drawer is...say in a kitchen island where the backside is exposed...good luck. Yes, I will now be patching those holes and trying to paint match. My wife is already like wtf. One could simply ignore those backside clips as they are for the slides, and if your slides are already well secured from the side these may not be necessary. I chose not to do that as I was trying to follow the intended design and thought they should be in place. If you look at the first picture, you can see the clip towards the back of the slide up against the wall of the cabinet.

Work perfectly

The media could not be loaded.  There’s some manufacturing defect to these. The right side does not slide flush to the back rail like the left side does by 1/4 inch. It’s on all three pairs that I purchased. So if you are to mount this the right side needs to be mounted 1/4 of an inch back which is not flushed with the front of a drawer box for the suggested box length.I’ve contacted the seller and they responded that manufacturer said it’s ok but seller made up the reason that it’s because it’s manually assembled and offered a new set. Ok but wouldn’t it be the same? So I tried one out and after the first few slides the plastic base where the latch attaches broke. Contacted the seller again and he said he could see from the picture that they were screwed incorrectly by the manufacturer. What? Opened the other box and the red plastic latch was shattered right out of the box and was now knife sharp. Seller offered to replace the latch. If I accepted these excuses I’d end up with 6 uneven rails with broken latches now and in the future. I don’t like to collect trash. Returned.

The instructions are very poor. We had to look it up on you tube to figure it out but once we figured it out and got them installed, I loved them The kitchen drawers have never worked so well.