Features:

• Two flanged ends that connect easily to ducting
• Polyurethane acoustic foam decreases fan noise by up to 50%
• Easy to install and maintenance free
• High-quality corrosion resistant galvanized steel sheet construction
• Moisture resistant – great for use in damp environment

Specifications:

• Outer Material: Durable galvanized steel sheet
• Sound Absorbing Foam: Wave crest polyurethane sponge
• Fusion Point of Foam: 250 degrees centigrade
• Size: 4” diameter and 12” long