The QRS Vent Duct Slim Sleeves consist of a flexible galvanised steel shell containing graphite based intumescent material. They are manufactured to suit flat ducts of 110x54mm, 205x60mm, and 220x90mm.
Tested to Type X durability which means the QRS Vent Duct Slim Sleeves can be installed in conditions exposed to weathering. QRS Vent Duct Slim Sleeves are expected to last the lifetime of the building.
View NBS Specification
Standards & Approvals
Building Regulations impose limitations on all pipes passing through fire compartment walls and floors. QRS Vent Duct Slim Sleeves allow plastic ducts to meet the requirements of the Building Regulations. QRS Vent Duct Slim Sleeves have been tested according to BSEN 1366-3 where various plastic duct sizes have met insulation and integrity criteria for this standard for up to 2 hours.
QRS Slim Sleeves are suitable for use around plastic ventilation ducts and are tested to BSEN 1366-3 and classified
according to EN 13501-2 up to 2 hours integrity. For full details and performance information contact the Quelfire Technical Team.
||Duct Size (mm)
||Space needed around duct to fit QRS Slim Sleeve (mm)
||Recommended aperture (mm)
||QRS length (mm)
||110 x 54
||126 x 70
||204 x 60
||219 x 75
||220 x 90
||244 x 114
The QRS Vent Duct Slim Sleeves should be placed around the ventilation duct, positioned centrally within the partition and should be flush or protrude from each face of the wall. The plasterboard should be cut to a tight fit around the QRS Vent Duct Slim Sleeves, and any gaps should be sealed with the QSS QuelStop CE Marked Intumescent Acoustic Acrylic Sealant.