Tenmat’s Vent Duct OverSleeve is a firestop penetration seal designed to fit around Semi Rigid PE Ducting that pass through fire rated partitions.

The OverSleeve is fire tested to EN 1366-3 in plasterboard partition walls and classified to EI120 according to EN 13501-2. The testing was carried out with Uncapped/Uncapped pipe end configuration as required for ventilated systems.

The low profile (4mm thick) OverSleeve is supplied flat and can be wrapped around the ducting and resealed with the reinforced foil backing tape. It’s design allows the product to be retrofitted to existing ductwork if needed.

In a fire situation, the OverSleeve rapidly expands to crush and seal off the duct to limit fire and smoke spread.

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• Product Dimensions
• Fitting Instructions
• Test Data

Product Dimensions

Fitting Instructions

• Cut or ensure an 86mm diameter hole through the wall is in place
• Wrap OverSleeve tightly around the duct, peel back backing paper on self adhesive tab and press adhesive to the OverSleeve to seal
• Slide duct and OverSleeve into the wall
• If retrofitting to existing duct work, slide OverSleeve over duct until OverSleeve is centrally located
• Ensure OverSleeve protrudes by minimum 50mm on both sides of the partition
• For minor gaps, finishing and smoke sealing a Fire Rated Acrylic Intumescent Sealant can be used that is approved for fire penetration sealing

Test Data

IMPORTANT FIRE PRODUCTS NOTICE: The information displayed on this website should be used as a guide ONLY and our Technical Department should be contacted to obtain a tailored specification and any advice necessary before you place an order for fire protection products. Fire protection products are non-returnable except in accordance with Condition 8 of the Terms and Conditions and should be applied only by an individual with the necessary expertise and experience. We will not be held liable for any resulting damage to property, human life or monetary costs incurred due to the incorrect specification you have prepared or use of fire protection products caused by your negligence, including your failure to have contacted us to obtain the relevant advice/specification.