Vent Duct Oversleeve for Semi Rigid Ducting

TENMAT’s Vent Duct OverSleeve offers 120 Minutes Fire Rating to Semi Rigid Ducting. The low profile (4 mm thick) OverSleeve is supplied flat and simply wrapped around the ducting and resealed with the reinforced foil backing layer. Its design allows the product to be retrofitted.

TENMAT’s Vent Duct OverSleeve has been independently tested in accordance with EN1366-3 and achieves a fire resistance classification of EI120 (according to EN13501). This means that the product is able to prevent the spread of fire for 120 minutes. It was tested in partition walls without additional metal sleeving.


See below for product dimensions

  • EI120 Fire Rated
  • Can be retrofitted
  • Low Profile
  • Highly flexible for easy installation
  • Durable and Resilient Char
  • Accepts joint movement
  • No additional sealants required
  • Only one layer required

Product Dimensions

75mm 4mm 260mm 250mm

Test Approvals


Fire Test Approvals

Chiltern labs fire test
Plasterboard construction
Fire Rating – 15-120

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