Tenmat Vent Duct OverSleeve


    A firestop penetration seal designed to fit around Semi Rigid PE Ducting that pass through fire rated partitions.

    • EI120 Fire Rating
    • Can be retrofitted
    • Low Profile
    • Only one layer required
    • No additional metal sleeving or support required
    • Tested in min. 100mm Drywall / Solid Walls

    £24.05(ex. VAT)
    £28.86 (inc. VAT)
    Please choose your colour
    Available for Delivery (See Delivery Options Below)


    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

    StandardWall ConstructionDuct TypeDuct OD (mm)Duct Wall Thickness (mm)End Cap ConfigurationFire RatingClassification Report
    EN 1366-3Min. 100mm thick Drywall/ olid WallPE Semi-Rigid75mm7mmU/UEI120CR13219 Rev A

    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

    Report TypeFire Test LabReport NumberConstructionFire Rating
    Fire TestChiltern FireRF13219Plasterboard120

    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.


    Product Details

    Data sheet

    For Use By
    Professional Use
    Single, Two or Three Pack
    Single Pack
    Suitable For Use On
    Product Type
    Duct Sleeve

    Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

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    Tenmat Vent Duct OverSleeve is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.

    Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.

    Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.

    All delivery costs below are excluding VAT