For leaf-collecting machines, manhole blowers, air conditioning and heating applications and for air ducting and pollution control devices. It is not designed for pressure service. Temperature range : 30° to 150° F Flexibility 90° Construction : Cover : High density Clear with white helix synthetic compound. Tube : High density Clear with white helix synthetic compound. Reinforcement : Rigid white helix of high density Clear with white helix synthetic compound. Non-Branded