Keep in mind... If you are using single-gang non-metallic boxes without internal clamps, you have to staple it within 8" of the box. 314.17 (C) ex. I like the stackers also. They make for a nice looking installation.
[This message has been edited by Redsy (edited 01-29-2003).]
the minimums are with 8" of a NM box without clamps or 12" from a box with clamps and every 4 1/2 fett there after. Never staple on a twist, keep romex flat.
I once had a helper that could not grasp this concept so we had to go to stapling "hammer length apart", I kid you not...