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View Product ReviewsTelescopic Underfloor Vertical Vent Extension Piece
| 30+ units | 60+ units | 80+ units |
| £3.87ex. VAT | £3.79ex. VAT | £3.71ex. VAT |
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Product Overview
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Delivery & Returns Information
All delivery charges are shown in your basket and are dependent on the total value of items in your basket based on product category.
This charge is based on delivery to mainland UK excluding the following postcodes: AB, CF, DD, DG, KW, IV, LD, LL, NP, PH, SA and SY. If your delivery address is in any of these postcode areas a member of our customer service team will contact you prior to processing your order should an additional delivery charge apply. We do not offer deliveries outside the UK mainland.
Standard (Nationwide) Delivery
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| ORDER VALUE | DELIVERY CHARGE |
| Under £300 ex. VAT | £25 ex. VAT |
| Over £300 ex. VAT | FREE |
Core Delivery charges apply only when all products in an order that have equivalents are accepted as such. If even one product cannot be substituted with an equivalent, the entire order will not qualify for Core Delivery charges.
| Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £100 | £20 ex. VAT |
| Between £100 - £250 ex. VAT | £15 ex. VAT |
| Over £250 ex. VAT | FREE |
| Insulation, Plasterboard and Drylining Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £150 | £50 ex. VAT |
| Between £150 - £400 ex. VAT | £35 ex. VAT |
| Over £400 ex. VAT | FREE |
| SuperFOIL and YBS products | |
| ORDER VALUE | DELIVERY CHARGE |
| Each item | £10 ex. VAT |
| Over £350 ex. VAT of 1 brand | FREE |
| Screws & Fixings and Adhesives & Sealants | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £100 | £7.50 ex. VAT |
| Over £100 ex. VAT | FREE |
Express Delivery
| Express Delivery - Insulation and Plasterboard & Drylining | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £50 ex. VAT |
| Over £400 ex. VAT | £35 ex. VAT |
| Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £50 ex. VAT |
| Over £300 ex. VAT | £35 ex. VAT |
Returns
We offer a 30 day returns policy on any faulty products.
Key Features
- {{open_in_full}} Extends vent to deeper voids
- {{air}} Ensures effective sub-floor airflow
- {{fitness_center}} Robust build for lasting performance
- {{check_circle}} Simplifies deep void vent installs
Technical Specification
| Sales Unit: | Each |
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| Colour: | Black |
What is Telescopic Underfloor Vertical Vent Extension Piece?
A Telescopic Underfloor Vertical Vent Extension Piece is a purpose-designed component that attaches to a main telescopic underfloor ventilator (often called a TUV or periscope vent).
Its primary function is to increase the overall vertical reach of the ventilation pathway. This is particularly important when the depth from the external air brick level down to the sub-floor void is greater than what the standard primary vent unit can accommodate.
Manufactured from durable, weather-resistant, and UV-stabilised polypropylene, this extension piece is built to withstand the demanding below-ground environment while maintaining its structural integrity and airflow pathway.
It ensures that fresh air can be effectively ducted from an external air brick, down through challenging ground levels or deep masonry, and into the sub-floor void, and that moist air can escape.
Applications
- Extending the height of underfloor ventilation systems
- Improving airflow in taller subfloor voids
- Enhancing the flexibility of ventilation in both new construction and renovation projects
Benefits
- Increased Installation Height: Allows the primary underfloor vent to be extended vertically, accommodating deeper foundations, stepped ground levels, or higher finished floor levels relative to the air brick position.
- Seamless System Integration: Engineered for a secure and precise fit with compatible primary telescopic underfloor vent units, maintaining the integrity of the ventilation system.
- Durable & Weather-Resistant Construction: Made from high-quality, robust materials designed to resist moisture, soil chemicals, and temperature variations for long-lasting performance.
- Maintains Airflow Pathway: Ensures a clear, unobstructed channel for air to travel between the external air brick and the sub-floor void, crucial for effective ventilation.
- Simplifies Complex Installations: Provides a straightforward solution for achieving correct ventilation heights in challenging site conditions, often eliminating the need for complex or custom-made ducting.
- Cost-Effective Adaptability: Offers an economical way to adapt standard ventilation systems to non-standard site depths, saving time and labour.
- Supports Regulatory Compliance: Helps ensure that sub-floor ventilation meets the requirements of UK Building Regulations (such as Approved Document C for moisture control and Approved Document F for ventilation) by enabling correct vent positioning.
