What are FT Filters and what do the different color filters represent? 

FT Filters work to block out background noise, while honing in on the frequently range of the human voice as a result workers can hear each other more than without dB Blockers.

• Green is the most common filter. It is the standard used in the majority of the protectors and excellent for sound levels 90-110+ dBA
• Yellow is used in situations where more sound pressure in the speech frequencies is desired either due to hearing loss or a lower level of ambient noise, this filter enhances speech in noisy environments even more
• White - This filter is used where noise levels are below 90dBA and in earpieces used in conjunction with radio connections like the dB Com Communicate Ear, we use the white filter. If the noise level is above 95 dB we use the Yellow filter
• Red - The red filter provides a full block similar to an unvented protector