NRRh means Noise Reduction Rating for the Higher-rated protector in
Commercial
Similar to NRRh
ABS - Anti Balance System
ABS - Anti-Ballistic Selenium
ABS - Anchor Bolt Stabilizer
ABS - Acrylonitrile Butadiene Styrene
ABS - Anti Blockier System
ABS - Agile Body Suit
ABSD - Achievable Buoy Station Dimension
View all in Commercial