
Description
Plastic Ducting Reducer / Adaptor
Easily convert larger ducting to a smaller size - UK-manufactured with high-quality, durable materials - Ideal for domestic & commercial ventilation systems
Product Variants & Specifications
125 to 100 Reducer / Adaptor (R125100P)
150 to 100 Reducer / Adaptor (R150100P
150 to 125 Reducer / Adaptor (R150125P)
200 to 150 Reducer / Adaptor (R200150P)
Key Features
- UK-manufactured with high-quality materials - Suitable for various ventilation systems, including: Kitchen extractor fans, Bathroom fans, In-line extract fans, Whole house ventilation, Passive stack vent, Positive input ventilation, Air conditioning & HVAC, Heat recovery systems - Compatible with most manufacturers
Performance
- Rigid ducting provides superior airflow performance compared to flexible PVC or aluminium alternatives - Compliant with Part F Building Regulations
Installation Guide
For maximum airtightness & durability: 1. Apply plastic ducting sealant to the male fitting 2. Push fittings together 3. Secure with aluminium duct sealing tape For faster installation (up to 70% quicker), self-sealing fittings can be used – also allows for easy dismantling.
Insulation of Ductwork
- If ducting runs through a cold area (e.g. loft space), it must be insulated - Required insulation: 25mm thickness & Thermal conductivity of 0.04W/(m.k) or lower - How to insulate ducting: Wrap with 25mm duct wrap (silver foil face) & Use 25mm rockwool Bubble wrap insulation is no longer compliant with building control regulations.
Available Sizes
- 100mm, 125mm, 150mm, 200mm For larger ducting, metal spiral ducting is recommended due to superior strength.
Frequently Asked Questions
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What is rigid PVC ductwork used for?
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What is the difference between round and rectangular PVC ducting?
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Can rigid PVC ductwork be used with MVHR systems?
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Is rigid ducting suitable for industrial or commercial extraction?
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What sizes does rigid PVC ductwork come in?
BPC Ventilation · Free project support
Not sure which ventilation system you need?
Send us your floor plans for a free ventilation estimate and residential layout guide. Our team will review your project and help you choose suitable MVHR or MEV equipment for your property and budget.
- Free estimate & layout guide
- Independent advice across brands
- Lifetime technical support with every system sold
Upload your drawings and project details to get started.
Free residential layout guides cover airflow requirements and unit and valve location guidance. Full ducting route planning is a separate service. Layout guides are not available for commercial projects.