Type-W Vent Extender Duct £49.00 ex VAT / pack of 50 Type-W Vent Extender Duct £49.00 ex VAT / pack of 50 Type W Extension Duct - Translucent. 50 ducts to a box. Extension duct for connection to rear of Type-W Vent to provide lengthened version to service masonry skins of increased thickness. Can be cut on site if required.DIMENSIONS: 200/225 x 65 x 10mmAIR FLOW RATING: 300mmĀ²MATERIAL: PolypropyleneBOXED: Packs contain 50 extensions £49.00 ex VAT Buy online now Find nearest stockist Resources View all related documents Instructional videos Installation Videos A series of tutorials explaining how to install SureCav Read more SureCav Brochure All PDF Drawings BBA Certificate Brochure Certifications Design Handbook Instruction Sheets .pdf BBA Certificate All PDF Drawings BBA Certificate Certifications .pdf Installation Instruction Sheet All PDF Drawings Block and Render Brick Flint ICF Instruction Sheets SFS Stone Timber/SIP Frame Traditional .pdf SureCav Pocket Guide All PDF Drawings Brochure Design Handbook Installation Guides Instruction Sheets .pdf Ventilation Requirements All PDF Drawings BBA Certificate Cavity Ventilation Certifications Ventilation Requirement .pdf SureCav25 Profile Drawings (DWG) All DWG Drawings .zip SureCav50 Profile Drawings (DWG) All DWG Drawings .zip SureCav Ventilation Requirements All PDF Drawings BBA Certificate Cavity Ventilation Certifications Ventilation Requirement .pdf Additional wall ties at openings Additional ties at reveal All PDF Drawings Stone .pdf Related Products SureCav 50 The 50mm cavity spacer system. Creates a guaranteed clear, dry, moisture and mortar free BBA approved 50mm residual cavityPanel size: 1200mm x 450mm x 50mm £150.00 ex VAT Add to cart SureCav 25 The 25mm cavity spacer system. Creates a guaranteed clear, dry, moisture and mortar free BBA approved, 25mm residual cavity Panel size: 1200mm x 450mm x 25mm £150.00 ex VAT Add to cart Washers Washers are used when installing SureCav on timber/SIP frame buildings to create a watertight seal. 5 per panel recommendedSize: 6mm diameter hole x 10mm deep £11.00 ex VAT Add to cart Type-W Vent Achieves 1500mm2 per linear meter BBA ventilation requirement, when installed every 0.5m high and low with these ventsSize: 105/115mm x 65 x 10mm £24.00 ex VAT Add to cart