TENMAT’s FIREFLY 109+ Vent Duct Fire Sleeve LPs (Low Profile) provide up to 120 minutes’ fire resistance for all common PVC ventilation ducts. The Low Profile Vent Duct Fire Sleeves offer industry leading fire performance with low material thickness through the use of TENMAT’s expertise in high expansion intumescent technology.

The low profile design allows tight fitting against the ceiling soffit without the need to remove the top edge, aided by the compressible nature of the FIREFLY 109 intumescent material.

The product can be slit to allow retro fitting over duct work and the unique vacuum formed shape ensures that the product expands and seals the ducting in the event of a fire without the need for any additional metal cage or sleeving.

A length of Aluminium Foil Repair Tape is provided with each sleeve within the price quoted for use during fitting - please see General Fitting Instructions.

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• Features & Benefits
• Ordering References
• Examples of Applications & Approvals
• General Fitting Instructions
• Example Approved Applications

Features & Benefits

• Up to 120 minutes Fire Rated
• Tested in Internal & External Walls
• CE Marked
• Low Profile design
• No metal sleeving or boxing out required
• Approved for plasterboard partitions and ablative coated fire batts
• Can be slit to allow retro fitting over duct work

Ordering References

All dimensions given are nominal. To ensure required friction fit within the substrate, the Sleeve should be measured on sit before cutting holes. *For longer lengths, please contact TENMAT.

Examples of Applications & Approvals

Independently Third Party Assessed:

30 Minute Partitions

• Single Board from 72mm upwards

60 Minute Partitions

• Single and Double Board Systems
• Single Layer Ablative Coated Fire Batt

120 Minute Partitions

• Double Board Systems
• Double Layer Ablative Coated Fire Batt

Multiple Duct Penetrations

• Up to 3No. Side by side ducts
• Up to 2no. Stacked ducts
• Mixed Sizes

Tested through External Walls—SFS construction

CE MARK Approved:

3rd Party Assessed and Audited

BS EN 1366-3 Fire Tested

Uncapped/Uncapped tested as required for ventilation systems

Fire Tested and Assessed for all common sizes of ducting

General Fitting Instructions

For detailed fitting instructions for various applications please contact our technical team on 0113 2455450 (option 2) or send a message to [email protected].

• Installation requirements detailed in fire test evidence must be followed in addition to below:
• Use the Fire Sleeve as a template when cutting the plasterboard to provide a snug fit around the Fire Sleeve
• Make a slit along sleeve length to allow fitting around pre-installed ducts

• Fit sleeve around duct
• Slit should be resealed with Aluminium Foil Repair Tape (provided with each sleeve)
• Slide Fire Sleeve until central within wall

• The Fire Sleeve must protrude each side of the wall by min 25 mm (partitions)/40 mm (single fire batts)/75 mm (for 125 and 150 mm ducts)
• For protrusion details when used in External Walls, please contact our technical team on 0113 2455450 (option 2) or send a message to [email protected]
• Fire Sleeves cannot be joined to increase the length. Longer versions may be available to order - please contact our technical team.
• Plasterboard should be a snug fit, however any gaps (up to 5mm) should be sealed with intumescent sealant

Example Approved Applications

For details of further applications please contact our technical team on 0113 2455450 (option 2) or send a message to [email protected].

Approved for a wide range of applications. All details for approved applications can be seen in the ETA and/or assessment reports which are available on request.

Single or double layer plasterboard. Approved with or without cavity insulation for all duct sizes listed

Multiple duct penetrations, including side by side and stacked, approved for parti- tions and fire batt applications (rectangular ducting only).

Tested in External Walls— contact our technical team for specific details.

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.