SpiroFlex adapter 60/100 VK (collar) white – SpiroFlex SX-TD-AVKB

SpiroFlex adapter 60/100 VK (collar) white is a ventilation transition designed to connect 60 mm and 100 mm circular duct components using a VK-style collar. Made for HVAC systems, this compact white adapter creates a sealed junction between mismatched duct sizes and fittings and is intended for indoor installation where space-saving and a neutral appearance are required.

Advantages

The adapter provides a secure connection that reduces air leakage at the transition point and maintains airflow continuity between different diameters. Its white finish integrates with interior ductwork and ceiling installations. The VK-style collar simplifies installation and ensures compatibility with standard circular ducts and fittings made for VK collars. The compact form factor saves space and allows for placement in confined areas where a larger transition piece would not fit.

Suitable for

• Connecting 60 mm circular ducts to 100 mm circular ducts in residential ventilation systems
• Indoor HVAC transitions in bathrooms, kitchens, utility rooms, and false ceilings
• Retrofit projects where existing ductwork requires size adaptation without replacing long runs

Key specifications

• Connection diameters: 60 mm to 100 mm circular transition
• Collar type: VK-style collar for standard circular duct fittings
• Color: white, suitable for visible installations
• Application: indoor ventilation systems and HVAC transitions
• Form factor: compact transition adapter designed for limited space

How to use

Fit the VK collar end of the adapter to the corresponding VK-style duct fitting and insert the 60 mm or 100 mm circular duct into the matching side, ensuring full seating for a secure fit. Where applicable, use appropriate clamps or sealing tape to create an airtight connection and prevent leaks. Verify alignment and airflow direction before completing installation. For long-term performance, check that surrounding supports prevent undue stress on the adapter and connected ductwork.

Usage recommendations

Use in dry indoor environments and avoid exposure to direct sunlight or outdoor weather. For best sealing performance, apply HVAC-approved sealing tape or gasket material at joints. Inspect connections periodically and replace the adapter if signs of damage or persistent leakage appear.