In general, there are two types of flexible duct clamps: rolly or strip and numerical or single. Numerical clamps are produced in certain sizes from 4 inches to 12 inches and each has its own lock. But the rolly clamps are produced in the form of a 30-meter long strip, and the consumer can cut it to the desired length according to the need, and then use it with the special lock of this clamp in the connections of flexible ducts. Havakaran Tehran Noavar Company always supplies clamps and locks related to flexible ducts in different sizes and at the lowest prices to its consumers and customers.