Source for 1/2″ thick, untextured closed-cell pads ?

http://www.prolitegear.com/prolite-gear-evopad-12.html

Closest I can think of off the top of my head. Might be able to try http://www.suluk46.com/ for a custom size?

Here ya go: http://www.prolitegear.com/site/xdpy/ssg/Sleep%20Systems/Sleeping%20Pads.html

They have 1/2 in Evazote pads and they ship quick. I used one on my last trip and it was a lifesaver.

http://www.foambymail.com/minicel-foam.html

Thanks guys, the minicell foambymail pads are only 72" long and the prolite pads are 20" wide, I'll probably go with the Prolite pad being they're longer. I could get the foamby mail pad that's 48×72 and cut it in half. I'm making my own winter fan folded pad, so this would work or buy (2) prolites. I want (4) 24" wide x 19" sections to make one 76" long pad.

http://www.mcmaster.com/#closed-cell-foam/=fgo2l9

Try this.
http://www.matplusinc.com/materials/mp_foam_35.html
You may need to call them about types, there are LOTS of different types.

Anyway, 24×19 is quite a large section. Is this to use for a pad reinforcement in a pack, may I ask?

Suluk 46— Padded Ground Sheet

foamorder.com

They don't sell that exact size, but they sell bigger sheets that you can cut down.

owfinc.com? I know they sell CCF but I'm not sure about 1/2"

Not interested in Ridgerest's or Z-Rests as well.