-40%
3 Smart Fill Electrical Box Spacers Double Gang 3/8
3 Smart Fill Electrical Box Spacers Double Gang 3/8
3 Smart Fill Electrical Box Spacers Double Gang 3/8

3 Smart Fill Electrical Box Spacers Double Gang 3/8" New

$ 5.27

Availability: 100 in stock

Description

UL94HB
UL 94 is a plastics flammability standard released by the Underwriters Laboratories (USA).
HB definition is Slow burning on a horizontal part.
The
horizontal burning test
is used to determine the HB flammability rating of a material. The flammability rating is calculated for a
test
specimen as a function of the
burning
rate and taking account of the material thickness