# Telescopic Underfloor Vent – 5–7 Courses – For 150mm Cavity – 1201XL+

The 1201XL+ telescopic underfloor vent is designed to provide reliable ventilation beneath suspended ground floors, helping to maintain consistent airflow and reduce the risk of moisture build-up in underfloor spaces. Suitable for cavity widths of 150mm and above, it features an adjustable telescopic design that accommodates between 5 and 7 brick courses, making installation flexible across a range of construction requirements.

Manufactured from durable polypropylene, it offers excellent strength, long-term durability, and resistance to decay, ensuring dependable performance in demanding conditions. With a free airflow of 8000mm², it delivers effective ventilation while remaining fully compatible with 1201AB airbricks. Suitable for cavities with clear widths down to 50mm, it is supplied in black for a discreet finish in external applications.

## Details

- **Price:** 11.23 GBP
- **Vendor:** ALUMASC B P LTD (T24R) TIMLOC
- **Type:** Vents & Weeps
- **Tags:** Black, Building Materials, Damp Proofing & Ventilation, Local, Polypropylene, Vents & Weeps

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 11.23 GBP | In stock |

## Images

- Telescopic Underfloor Vent – 5–7 Courses – For 150mm Cavity – 1201XL+

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> Source: [Carvers Building Supplies](https://www.carvers.co.uk/products/telescopic-underfloor-vent-5-7-courses-for-150mm-cavity-1201xl)
> Updated: 2026-06-23