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Fast Track Range

Semi-Rigid Ducting Solution

Fast Track Range

EnviroVent believes that quality ductwork should not be dependent upon highly qualified installers and regulatory measures. Therefore, we introduced ventilation ductwork, which can be installed very easily and quickly, even by less qualified and experienced installers.

The Fast Track Range is a comprehensive portfolio of semi-rigid ductwork and connectors to make a complete, airtight and easy to install ventilation system.  The semi-rigid ducting is available in various circular and semi-circular dimensions and all ductwork types can connect to one universal distribution box by using adapters. This eliminates the need to keep stock of numerous box types and limits costs.


Features & Benefits

  • Air tight seals
  • Minimal energy consumption and noise hindrance
  • Ducting can be commissioned faster using software and restrictor rings
  • No tape or sealant required
  • Fewer connections so less risk of air leakage
  • Antibacterial internal lining

The Fast Track Range can be installed quickly and easily, even by less experienced installers and is the perfect solution for both new build and self build projects.

When ducting is selected and installed correctly, it can improve and prolong the efficiency of the whole system, leading to long term low maintenance. On the other hand, a ventilation system that has issues with the ducting, which can range from ‘slump’ of flexible types, through to inadequate jointing mechanisms, is always going to underperform.  Poorly installed duct work can potentially damage the ventilation unit and the fabric of the building.

Semi rigid ducting outperforms flexible ducting as it maintains a fixed diameter for airflow by avoiding ‘slump’. When this occurs in flexible ducting it can restrict air flow as well as resulting in a pooling of condensation in the pipework. Available in various circular and semi-circular dimensions, the ductwork can connect to one universal distribution box by use of adapters.  There are three sizes of ducting to suit domestic and small non-domestic systems.  The air distribution boxes meet with Airtightness Class C (EN 12237) and provide easy post-installation access to restrictors and for maintenance.

Rigid or flexible?

Ducting can be made of rigid materials or from flexible components - many buildings use a combination of types to suit different purposes.  Although rigid ducting costs more, it results in reduced maintenance and improved performance of the ventilation system.  Many installers also prefer it because it is easier to seal and clean.  Frequently, installers will choose rigid ducting for the main trunk and more flexible ducting for offshoots. However, flexible ducting should be used as a last resort, as it poses the greater risk of issues developing later on.  In some spaces, flexible ductwork can be the only choice, for example, when reaching vents in difficult places, such as corners or house eaves. However, it is always preferable to use rigid ducting because the flexible variety is prone to ‘slump’ over time. This can lead to pooling of condensation in the section affected, which restricts the flow of air through the system.  

Flexible ductwork can suffer from ongoing problems if installed incorrectly including:

  •          High Air Leakage
  •          Pressure Loss
  •          Difficult to clean
  •          Noise transfer between rooms

Ductwork is the achilles heel of mechanical ventilation heat recovery units:

  •          Poorly designed ductwork results in high pressure drop.
  •          Unsealed connections result in high air leakage.
  •          Both result in higher energy consumption and noise hindrance, as the ventilation units have to work harder.

Air Distribution Boxes with Semi-Rigid Ducting

  • Plastic = lightweight, risk-free installation
  • Universal distribution box for all Fast Track Range duct types: AE23c, AE34c, AE35sc, AE45c, AE48c and AE55sc
  • Airtightness Class C (EN 12237)
  • Stepped mass flow duct adaptor: Ø125mm, Ø150mm, Ø160mm and Ø180mm
  • Easy post-installation access to restrictors and for maintenance

Distribution Box & Accessories 

Order Code Product

Dimensions (mm)

Ø = External Diameter

D-BOX8 Distribution Box 8 Spigots --
D-BOX16 Distribution Box 16 Spigots --
D-BOX24 Distribution Box 24 Spigots --
1AD-DBOX Stepped Adaptor for Distribution Box --
D-BOX-ACOINS Acoustic Insulation for Distribution Box --
D-BOX-COVER Cap for Distribution Box --
D-BOX-RING Air Restrictor for Distribution Box --
1AC GALV BAND Galvanised Fixing Band Ø125
1DIF-SUPPLY-125/1DIF-EXTRACT-125 Supply & Extract Valves 125mm Ø125

75mm Range

Order Code Product

Dimensions (mm)

Ø = External Diameter

1RD-SEMI-75MM Semi-Rigid Duct 50M Ø75 x 50M
1AD-CAP-75MM Cap for Ducting Ø75
1RD-SL-INS-75MM Insulated Duct Sleeve 75 x 10M
1RD-SEALRING-75MM Seal Ring Ø75
1RD-CLICKRING-75MM Click Ring Ø75
1RD-CON-75MM Straight Connector Ø75
1AD-CON-75-102 Adaptor Ø75-Ø102
1AD-VALVEADP-75MM Valve Adaptor 90° 125mm Ø75-Ø125

90mm Range

Order Code Product

Dimensions (mm)

Ø = External Diameter

1AD-DBOX-90MM Adaptor for Distribution Box Ø90
1RD-SEMI-90MM Semi-Rigid Duct 50M Ø90 x 50M
1AD-CAP-90MM Cap for Ducting Ø90
1RD-SL-INS-90MM Insulated Duct Sleeve 90 x 10M
1RD-SEALRING-90MM Seal Ring Ø90
1RD-CLICKRING-90MM Click Ring Ø90
1RD-CON-90MM Straight Connector Ø90
1AD-VALVEADP-90MM Valve Adaptor 90° 125mm Ø90-Ø125

102mm x 50mm Range

Order Code Product

Dimensions (mm)

Ø = External Diameter

1AD-DBOX-102X50MM Adaptor for Distribution Box 102 x 50
1RD-SEMI-102X50MM Semi-Rigid Duct 30M 102 x 50-L30M
1AD-CAP-102X50MM Cap for Ducting 102 x 50
1RD-SL-INS-102X50MM Insulated Duct Sleeve 102 x 50-L10M
1RD-SEALRING-102X50MM Seal Ring 102 x 50
1RD-CON-102X50MM Straight Connector 102 x 50
1RD-HBEND-102X50MM Horizontal Bend 102 x 50
1RD-VBEND-102X50MM Vertical Bend 102 x 50
1AD-VALVEADP-102X50MM Valve Adaptor 90° 125mm 102 x 50-Ø125
1AD-FLOOR-102X50MM Floor Grille Adaptor 102 x 50
1AD-FLGRILL-102X50MM-INOX Floor Grille Inox 102 x 50
1AD-FLGRILL-102X50MM-WH Floor Grille White 102 x 50

132mm x 50mm Range

Order Code Product

Dimensions (mm)

Ø = External Diameter

1AD-DBOX-132X50MM Adaptor for Distribution Box 132 x 50
1RD-SEMI-132X50MM Semi-Rigid Duct 20M 132 x 50-L20M
1AD-CAP-132X50MM Cap for Ducting 132 x 50
1RD-SL-INS-132X50MM Insulated Duct Sleeve 132 x 50-L10M
1RD-SEALRING-132X50MM Seal Ring 132 x 50
1RD-CON-132X50MM Straight Connector 132 x 50
1RD-HBEND-132X50MM Horizontal Bend 132 x 50
1RD-HBEND-132X50MM Vertical Bend 132 x 50
1AD-VALVEADP-132X50MM Valve Adaptor 90° 125mm 132 x 50-Ø125
1AD-VALVEADP180-132X50MM Valve Adaptor 180° 125mm 132 x 50-Ø125
1AD-FLOOR-132X50MM Floor Grille Adaptor 132 x 50
1AD-FLGRILL-132X50MM-INOX Floor Grille Inox 132 x 50
 1AD-FLGRILL-132X50MM-WH Floor Grille White 132 x 50