Duro Dyne® Dyn-O-Ring™ make installing spiral ductwork quick and easy. Dyn-O-Ring™ come with pre-drilled holes for fast assembly to the duct. They eliminate labor intensive clamps and clips and no special tools are needed for installation.

Duro Dyne® Duct Ring, 18 in, Steel, Galvanized

• Pressure class 20 to 10 in-WG
• Pre-drilled holes for easy installation on spiral duct
• Manufactured from 18 ga galvanized steel, meeting specifications ASTM A-653 (lock forming quality)
• Dyn-O-Ring™ can be installed and assembled on site or in shop
• Ducts can be disassembled and reassembled easily
• No barrel clamp closures required
• Virtually no leakage at transverse connection when properly installed