Where to buy monitor mounts that screw into the desk?

[tracerit]

I'm looking for about three height and tilt adjustable pole mounts for three monitors that have a screw down base rather than the clamp base that i've been seeing. The monitors are stationary and only need to be height and tilt adjustable. I've tried ebay, amazon and monoprice and some how none of them carry these mounts, is there a specific term for them that perhaps I'm missing?

 

[Sho'Nuff]

Many monitor mounts come with both clamps and bolt down options. See:

http://www.newegg.com/Product/Produ...ption=bolt+down+monitor+mount&N=-1&isNodeId=1

http://www.amazon.com/s/ref=nb_sb_n...oducts&field-keywords=bolt+down+monitor+mount

Note - you may have to go with individual mounts if you want a tri-monitor setup that is bolt down and height adjustable.

Edit - see also

http://www.amazon.com/VIVO-Standing...=8- 3&keywords=bolt+down+monitor+mount+triple

http://www.amazon.com/Mount--MI-4PC...r=8-7&keywords=bolt+down+monitor+mount+triple

 

[Burpo]

http://www.ebay.com/itm/VIVO-Dual-L...361253?hash=item567e318225:g:m9gAAOSw7hRWQrZn

 

[Sho'Nuff]

http://www.ebay.com/itm/VIVO-Dual-L...361253?hash=item567e318225:g:m9gAAOSw7hRWQrZn

OP wants a triple mount.