Palns change and you  might have measured accurately but are left with a gap!

A single Telescopic Duct has one end which includes the 5mm lip to join to the continuing LIPLOCK component

The other end is slightly tapered to slide the appropriate distance in the duct run, so you can fill the gap.

• Supplied with specially profiled rubber sealed Lever Lock to clamp DTS at required distance
• Can be undone and adjusted repeatedly
• Eliminates cutting and welding
• Saves time for installers if duct runs slightly change
• Thickness 0.75 UP TO DTS300mm DTS400 AND OVER 0.9mm
To install :
• Simply slip the smooth end of the telescopic inside the downwind section of the duct run.
• Slide the telescopic back up so it meets the ‘Upwind’ section and connect with appropriate connector
• Use the Lever Lock provided to ‘lock’ the Telescopic in position

NOTE : When ordering a DTS, you will recieve 1x 500mm duct flanged at one end and ONE especially profiled lock