Bottom or side full extension slides?

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Forum topic by b2rtch posted 02-20-2010 05:56 PM 1400 views 0 times favorited 6 replies Add to Favorites Watch
View b2rtch's profile


4851 posts in 3014 days

02-20-2010 05:56 PM

Topic tags/keywords: question

Last year I replaced all the shelve in the kitchen with, home made, full extension drawers (my wife loves them as well as her friends who now nag their husbands to buy or to make the same thing!)
I also made big full extension drawers on the bottom of the pantry cabinet to store cans and other big stuff.

I have been considering making full extension “vertical” drawers/shelves on the top part of the same cabinets.
I am planing on building two of these, just behind the two existing doors that I would use as the front of the drawers/shelves.
Fully loaded these drawers will be fairly heavy so I have been considering using underneath full extension ( 24” ) slides but these slides seems to be very expensive, much more so than the side ones.
Can I get away using side slides instead of bottom ones.
Do I need the slide/guide on the top of the drawer?
How to install the bottom slides?
Thank you.

-- Bert

6 replies so far

View Sawkerf's profile


1730 posts in 3034 days

#1 posted 02-20-2010 06:33 PM

Yes, the bottom mounts cost more – hiding hardware can get pricey. – lol

I had this conversation (side v.s. bottom mount) last night with a customer, and told them that there is also a slight difference in drawer sizing. Side mounts need 1/2” on either side of the drawer, and bottom mounts need ~3/4” beneath the drawer. Which is more important to you, drawer width or drawer height?

I don’t know for sure, but I think that tall, narrow, drawers would be less prone to “sway” with side mounts due to the orientation of the fixed and moving parts.

-- Adversity doesn't build reveals it.

View Dan Lyke's profile

Dan Lyke

1519 posts in 4091 days

#2 posted 02-21-2010 05:49 AM

I’ve used the super pricey undermounts in my kitchen so far, but I’d expect that a good set of side mounts could support more weight than the undermounts. I haven’t looked at the specs recently, but you should easily be able to get side mounts rated to 100 lbs or so.

-- Dan Lyke, Petaluma California,

View grizzman's profile


7836 posts in 3269 days

#3 posted 02-21-2010 06:49 AM

ive used the side mounts myself…there rated at 100 pounds…so that is plenty for me….one shelf i have my power mixer and food processor and a few other smaller items…but its all heavy stuff..and the side mounts work perfect…no sway and they roll out very smooth…i didn’t mind the hardware exposed..but you might feel different ..

-- GRIZZMAN ...[''''']

View Gotwood1962's profile


30 posts in 2985 days

#4 posted 02-21-2010 07:29 AM

I’ve used both,I think the undermounts are a little smoother than than the side mounts but you pay about 3 times the price of the side mounts. There are heavy duty side mounts that rate up to 500 lbs if you need them. I’m pretty sure they come in 22’s but that’s overkill and they too are pricey. Some K-V 8300”s would do fine as they have a 100 lb rating. Hope this helps.

-- Gotwood1962, If sawdust were valuable... I'd be a millionaire

View Moffett77's profile


32 posts in 2993 days

#5 posted 02-21-2010 08:02 AM

We switched to the Blum Blumotion bottom mounts for our drawer hardware about 4 years ago. These slides are much smoother than the side mounts and they are incredibly easy to install and remove. They are considerably more expensive but the difference in quality more than makes up for the cost. They are nearly invisible after installation leaving the drawer itself to be appreciated. KV makes a similar product but they are not nearly as smooth as the Blum slides. Topslide makes one as well but I have never used them.


-- Moffett, Sacramento CA

View PASs's profile


595 posts in 3064 days

#6 posted 02-21-2010 04:16 PM

My wife had the very same drawers made, unfortunately I was in Iraq at the time and couldn’t do the job myself.
The idiot who did the job use standard ansco, full extension slides and just mounted one at the top and one at the bottom ON THEIR SIDES instead of vertically…obviously they don’t support as much weight as when they are vertical. As a result the drawers sag when they are opened.
I’m going to fix it by dadoing a grove on the shelf support of the open side and into the plywood on the closed side and reset the slides into the dados.
In effect I will end up with a drawer that is 6 inches wide and 48 inches tall on 18 inch slides. It will work then.

-- Pete, "It isn't broken, you just aren't using it right."

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