Manrose Adapter Rectangle/Round Male 4″/100mm/110x54mm

The Manrose Round to Rectangular Male Adaptor is a compact and reliable ducting accessory designed to connect 100mm (4″) round ducting to 110 x 54mm rectangular (flat channel) ducting. This short adaptor features male connections on both ends, allowing it to fit securely into standard rigid ducting systems.

Engineered to ensure minimal airflow resistance while offering a space-saving solution, this adaptor is especially useful in installations with limited ceiling or wall voids, such as in kitchens, bathrooms, utility rooms, and tight service runs. Its tough PVC construction provides durability and resistance to environmental stressors like temperature changes and moisture.

Key Features

Round to Flat Duct Connection
Bridges the gap between 100mm (4″) round pipework and 110 x 54mm rectangular ducting systems in one simple step.
Space-Saving Design
Ideal for locations where full-sized duct components won’t fit, such as behind units or within wall cavities.
Male Connection Ends
Fits into both the round and rectangular ducts, simplifying installation and ensuring a snug, secure fit.
Rigid and Durable PVC Construction
Made from high-quality PVC for long-lasting reliability, impact resistance, and resistance to moisture and moderate heat.
Lightweight and Easy to Install
Weighs only 40g and installs quickly using standard duct clips, ducting tape, or mastic for airtight sealing.

Technical Specifications

Attribute	Detail
Round Connection Size	100mm (4″) – Male
Rectangular Size	110 x 54mm – Male
Material	Rigid PVC
Colour	White
Compatibility	Fits Manrose and most industry standard duct systems
Installation Type	Insert into flat or round duct, seal as needed
Boxed Weight	40g

Application Areas

Residential or commercial ventilation systems
Extractor fans in kitchens, bathrooms, and laundry rooms
Ceiling voids, underfloor spaces, and narrow wall chases
HVAC systems requiring discrete ducting solutions

Installation Advice

Insert the male round end into 100mm circular ducting.
Insert the male flat end into 110 x 54mm rectangular ducting.
Use duct tape or mastic sealant to ensure airtight joints and prevent leaks.
Secure ducts as needed with support clips or brackets.

Note: For optimal airflow and efficiency, avoid sharp bends immediately at the adaptor.

Frequently Asked Questions (FAQ)

Q: What is the difference between male and female connectors?
A: A male connector fits into another duct or fitting, while a female connector fits over it. This model is male at both ends.

Q: Can this adaptor be used in a ceiling void?
A: Yes, its compact size makes it ideal for confined ceiling or wall void installations.

Q: Does this require additional fixings?
A: No fixings are included. We recommend securing it with duct tape or sealant for best results.

Warranty Information

Manrose products are built to high-quality standards and this adaptor comes with a 1-year manufacturer’s warranty, covering manufacturing faults and material defects under normal use.