David and Gary -
Gary has the name correct, but the difference in rating is
derived due to complications related to the test method.
VTM materials tend to curl up, wilt or shrink away from a
flame when cut into test blanks normally used for the V-x
small scale material testing. To overcome
Vertical thin material. The first part is the orientation of the test sample
just as is 94 VX and the second part TM identifies thin material. Its thin
enough that if used on its own it to would burn, but when used attached to
someother surface it will not burn. Mostly I've sen it in tapes
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