100mm to 75mm Duct Reducer Adapter – HVAC Pipe Fitting
Default Title
$11.28
Sale price
$11.28
Regular price
$13.98
Skip to product information
100mm to 75mm Duct Reducer Adapter – HVAC Pipe Fitting
$11.28
Sale price
$11.28
Regular price
$13.98
100mm to 75mm Duct Reducer & Increaser Adapter
Bridge two different-sized ducts with ease using this 100mm to 75mm (4-inch to 3-inch) Duct Reducer Adapter. Crafted from lightweight, durable plastic, this connector creates a seamless, airtight transition in any ventilation system — whether you're upgrading a bathroom exhaust fan, optimizing kitchen airflow, or fitting out a hotel HVAC system. Its simple push-fit design means no tools, no fuss, and no professional required.
Key Features
- Universal Fit: Connects 100mm (4-inch) to 75mm (3-inch) circular ductwork for a smooth, seamless airflow transition.
- Durable Plastic Construction: Lightweight yet tough material stands up to everyday use in humid and temperature-variable environments.
- Easy Tool-Free Installation: Simply slide each end onto the appropriate duct pipe — no special tools or hardware needed.
- Compact Profile: Height of 80mm (3.15 inches) keeps the adapter low-profile and tidy within any duct run.
- Versatile Use: Ideal for bathrooms, kitchens, apartments, home offices, hotels, and commercial HVAC systems.
- Clean White Finish: Blends neatly with standard white ductwork and interior fittings.
Specifications
| Connection Size | 100mm (4 inch) → 75mm (3 inch) |
| Height | 80mm / 3.15 inch |
| Material | Plastic |
| Color | White |
| Type | Reducer / Increaser |
| Origin | Made in China |
What's in the Box?
- 1 × 100mm–75mm Duct Reducer Adapter
Compatible Applications
This adapter fits perfectly into residential and commercial ventilation setups, including bathroom exhaust fans, kitchen range hoods, inline duct fans, whole-house ventilation systems, and hotel/apartment HVAC ductwork.
For guidance on proper ventilation standards and indoor air quality, visit the EPA's Indoor Air Quality resource.
Related Products You May Like
- 10-Mode Garden Hose Nozzle – High-Pressure Spray Gun
- 1/4" NPT Nickel Plated Brass Air Compressor Tank Fill Valve
- 1/4" Hex Shank Wire Twister Drill Attachment | Rebar Tie Tool
Note: Please allow for slight dimensional variances due to manual measurement. Colors may vary slightly depending on monitor settings.
Frequently Asked Questions
Q: Will this 100mm to 75mm duct reducer adapter fit standard round ductwork?
A: Yes. This adapter is designed specifically for standard circular duct systems, connecting a 100mm (4-inch) duct on one end to a 75mm (3-inch) duct on the other. It is compatible with most rigid and flexible round duct tubing used in residential and commercial HVAC systems.
Q: Do I need any special tools or glue to install this duct reducer?
A: No special tools are needed. Simply push each end of the adapter onto the appropriate duct pipe. For extra security in high-airflow applications, duct tape or HVAC foil tape can be used around the joints, though it is not typically required for standard installations.
Q: Is this duct adapter suitable for bathroom exhaust fans and kitchen range hoods?
A: Absolutely. This reducer is well-suited for bathroom exhaust ventilation, kitchen range hoods, inline duct fans, and any application where two different-sized ducts need to be joined. It also works in hotel HVAC systems, apartments, and office ventilation setups.
Q: Can this adapter handle humid or warm air environments?
A: Yes. The durable plastic construction is designed to withstand the humidity and temperature variations typical of bathroom and kitchen ventilation systems, making it a reliable long-term fitting for these environments.