I'm trying to decide between:
a. Hilti CP 617 Firestop 6"X7" putty pads
b. 3M FireBarrier 7"X7" putty pads
Besides the obvious 1" difference, can anyone weigh in on any other major differences? I ask because eBay has a box of 20 Hilti pads for $50, vs. 10 3M pads for $50. Are the 3M pads twice as goodr? As far as I can find on each companies websites, the weight of each type are the same.