Green Planet mufflers come in various sizes from 6” to 12” in diameter. They are the industry leaders in duct noise reduction. These silencers are designed to be put after the fan and reduce noise up to 70%. A must have for every garden. Shipped in a convenient flat box and easy to assemble.
Assembled it measures 10" in diameter, 18" long, plus the 6" flanges for the ducting and fan