3M (PT4RD) Fire Barrier Pass-Through Device PT4RD, 4 in, Round high-visibility-gear Noise Reduction Rating (NRR)*: 21

Noise Reduction Rating (NRR)*: 21 dB

hardware to forestry

Protection Type: Multi-Gas

AABACO Oil Only Spill Kit (up to 25 gal absorption) is contained in a Drum for instant response to any spill

3M (PT4RD) Fire Barrier Pass-Through Device PT4RD, 4 in, Round high-visibility-gear Noise Reduction Rating (NRR)*: 21Ideal for vital telecom equipment, especially in high traffic areas where cable is constantly being added or removed. Simple to install device keeps penetrants protected and organized ( 0% to 100% fillable) throughout the lifecycle of a building. Provides up to 3 hour fire protection. 3M(TM) Fire Barrier Pass Through Devices use a unique fixed fire rated intumescent material which works in conjunction with a foam smoke seal and optional mounting