Intumescent Fire Collar for Plastic Ventilation Ducts | Retrofit

Intumescent Fire Collar for Plastic Vent Ducts | QWR

QWR Fire Collars for Plastic Vent Ducts prevent the spread of fire through plastic ventilation ducts where they penetrate fire compartment floors / ceilings.

QWR Collars can only be used to firestop ventilation ducts in certain applications, for firestopping ventilation ducts used in most common applications, please check out the QRS Intumescent Fire Sleeve.

Features & Benefits

  • Tested to BSEN 1366-3: 2009
  • Up to 4 hour fire rating
  • Suitable for thin wall PVC ventilation ducts
  • Can be retrofitted
  • Performance unaffected by weathering
  • (Type X Durability)


Building Regulations impose limitations on all pipes passing through fire compartment floors/ceilings. QWR Fire Collars allow plastic pipes and ducts to meet the requirements of the Building Regulations. QWR Fire Collars have been tested according to BSEN 1366-3: 2009 and provide up to 4 hours fi re integrity and insulation.

Name: Intumescent Fire Collar for Plastic Vent Ducts


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The QWR Fire Collars consist of a continuous pressed stainless steel flexible shell containing high performance graphite based intumescent material which reacts under the influence of heat to exert pressure on the ventilation duct as it softens to form a carbonaceous char which provides an effective insulation plug thus preventing smoke and fire passing through to the adjoining compartment. The QWR Fire Collar has built in fixing lugs which are used to secure it to the structure.


Tested to Type X durability which means the QWR Fire Collars can be installed in conditions exposed to weathering. QWR Fire Collars are expected to last the lifetime of the building.

Technical Support & Guidance

Should you require any further information regarding this product, please don’t hesitate to contact Quelfire Ltd.

Application / installation

Quelfire QWR Fire Collars should be used where a plastic ventilation duct penetrates a fire rated floor/ceiling.

For vertical pipework, one unit should be installed to the underside of the floor.

The soffit of the floor must be smooth and where there are irregularities in the surface, the space between the flange of the unit and floor should be made good using QuelStop Intumescent Acoustic Acrylic Sealant.

The QWR Fire Collar should be fed around the plastic ventilation duct, securing the ends together by passing the tongues on one end through the slots on the other end. The tongues should then be bent back and the unit secured to the structure using the integral fixing lugs.

The QWR Fire Collar must be secured to the floor/ceiling using fire resistant steel sleeve anchors.

Please refer to Quelfire Technical department for other technical fixing details.

Contact us for Technical Advice


Product Code Duct Size (mm) Space needed around duct to fit QWR (mm) Recommended hole diameter (mm) QWR length (mm) Fire Rating
QWR110/CE 110Ø 40 112Ø 50 Up to 4 Hours
QWR125/CE 125Ø 45 132Ø 50 Up to 4 Hours
QWR160/CE 150Ø 50 162Ø 50 Up to 1 Hour
QWR110/54 110 x 54 rectangular 45 112 x 56 50 Up to 4 Hours
QWR205/60 204 x 60 rectangular 45 206 x 62 50 Up to 30 Minutes

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