Filter Vents - Pack of 100, 120mm, KC401860

8mm X 120mm Filter Vents (.31496"). Filter vents will work with polyethylene only, cure temperature 400 degrees, Fahrenheit. Filter limit - 500 degrees, Fahrenheit. Excellent alternative to standard vent tubes. Trim when needed at the end of each cycle. Advantages: Will not completely foul with plastic Breathes through entire heating and cooling cycle Made of mineral wool.