450mm Inspection Chamber Riser 235mm Depth
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Tue 9 Jun
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Key Features
- {{height}} Extends the height of 450mm inspection chambers
- {{water_drop}} Secure, watertight extension
- {{route}} Suitable for both foul and surface water drainage systems
- {{format_line_spacing}} Can be stacked to achieve required chamber depth
Technical Specification
| URN: | 7001406 |
|---|---|
| Product: | Riser |
| Material Type: | PVC |
| Depth: | 235mm |
| Diameter: | 450mm |
| Sales Unit: | Each |
| Manufacturer's Reference: | D915 |
Product Overview
450mm inspection chamber riser with 235mm depth designed to extend the height of 450mm inspection chambers.
Used in underground drainage systems, this riser allows chamber covers to be positioned precisely at ground level while maintaining safe access for inspection, maintenance, and cleaning.
Manufactured from durable, high-strength polypropylene, the riser provides a watertight and structurally secure extension to the chamber assembly. It integrates directly with 450mm chamber bases and additional risers, forming a continuous, sealed unit when correctly installed.
The 235mm depth offers flexible adjustment of chamber height to suit different site levels. Multiple risers can be stacked vertically where greater depth is required, ensuring adaptability across a range of installation conditions.
Suitable for both foul and surface water drainage systems, this riser provides long-term reliability in domestic and light commercial projects.
Its manageable size and weight allow straightforward handling and precise alignment during installation, ensuring compliance with modern drainage standards.
Features & Benefits
- Durable construction: Manufactured from robust, long-lasting polypropylene for underground use.
- Height adjustment: Provides 235mm depth to bring chamber cover to finished ground level.
- System compatibility: Fits securely with 450mm inspection chamber bases and additional risers.
- Flexible installation: Can be stacked to achieve required chamber depth on site.
- Reliable performance: Suitable for foul and surface water drainage systems.
Applications
- Underground drainage: Extends chamber height for secure access at ground level.
- Residential projects: Provides flexible chamber depth in domestic drainage layouts.
- Light commercial works: Suitable for chamber extensions in small commercial drainage systems.
- Maintenance access: Ensures inspection points remain accessible after backfilling and landscaping.
Installation Guidance
- Preparation: Position riser directly on top of chamber base or another riser.
- Sealing: Ensure watertight connection using compatible seals or locking systems.
- Stacking: Add additional risers where greater chamber depth is required.
- Cover fitting: Complete assembly with a compatible 450mm chamber cover and frame for surface access.
- Backfilling: Compact surrounding material evenly to maintain chamber alignment and stability.
Compliance & Performance
- Material standard: Manufactured to meet drainage system specifications for underground components.
- Load capacity: Designed to withstand ground loadings when correctly installed and backfilled.
- System suitability: Approved for use in both foul and surface water applications.
- Installation compliance: Meets Building Regulations requirements for inspection chamber construction.
- Important note: Ensure risers are correctly aligned and securely fitted to maintain watertight performance.
Delivery & Returns Information
Delivery charges vary by product category and order value. Items may ship from different suppliers and arrive separately, so delivery charges can be shown per part of your order at checkout.
Standard (Nationwide) Delivery
| Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £25 ex. VAT |
| Over £300 ex. VAT | FREE |
Express Delivery
| Express Delivery - Insulation and Plasterboard & Drylining | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £90 ex. VAT |
| Over £400 ex. VAT | £55 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 |
How delivery works
We work with a nationwide network of trusted suppliers. Items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you will see delivery charges shown at checkout for each part of your order. We always aim to group products from the same supplier to keep delivery costs as low as possible.
Delivery areas
Delivery charges apply to mainland UK, excluding: AB, CA, CF, DD, DG, EH, EX, FK, KA, KW, KY, IV, LA, LD, LL, ML, NP, PA, PH, PL, SA, SY, TR, TQ and TD.
If your address is in one of these areas, we will contact you before processing your order to confirm any additional costs. We do not currently offer delivery outside the UK mainland.
What to expect on delivery day
- Deliveries are typically kerbside.
- Please ensure someone is on-site to accept delivery. For heavier items, help with offloading may be required.
- Many building materials arrive on large vehicles. If access is restricted, a specialist vehicle such as a HIAB may be required and could incur an additional charge.
Why delivery can cost more than typical parcel delivery
Building materials often travel on larger vehicles and usually carry fewer drops per run than parcel networks. That is why delivery charges can be higher than standard e-commerce shipping.
Returns
Returns depend on what you have bought and whether there is anything wrong with it. For full details on eligibility, timeframes, and exclusions, please see our full policy.
