We offer our spiral in two basic configurations.  The basic, standard method of connection is a slip coupling connection.  All fittings are undersized to fit into the spiral duct and allow the installer to screw the connection together.  If there is a pipe to pipe connection, an internal coupling is required.  The second method is a flanged connection.  This may be accomplished with a variety of connections.  The fittings, however, will be manufactured using the same method, no matter which flange connection you choose.  At TNT, we will gladly install all flanged connections onto the duct prior to shipment to ease the job site time required for installation.

• Slip Connection
• Flanged Connection

To place an order, please use our convenient order form.  Once you fill it in, please e-mail it to the link on the form.  Thank you

                                                 TNT Order Form