Trimvent 4000 Hi Lift

Aluminium slot ventilator BUY NOW

For use on PVCu, timber or aluminium windows

Trimvent 4000 Hi Lift is an aluminium slot ventilator that fits over a 13mm slot in a window and provides an Equivalent Area (EA) of up to 6000mm² when fitted with the Hi Flow canopy. The TV4000 Hi Lift is ideal for both new build or refurbished situations using any window material and is available in a variety of colours.

The Hi Lift design improves the Trimvent range to offer increased ventilation giving optimum airflow (and therefore Equivalent Area) utilising existing Trimvent slot sizes and vent lengths, meaning they are 60% more efficient than previous models.

Specifically developed for recent revisions to Part F of the Building Regulations, Ventilation (England & Wales), and to improve performance for requirements throughout the UK and Europe.

Trimvent 4000 range of ventilators have been specified and fitted on millions of windows throughout the UK and mainland Europe for nearly twenty years.

System 1 System 2 System 3






Features & Benefits

  •  Revised design to improve performance and Regulations compliance.
  • Compression closing action.
  • For use on 13mm slot.
  • Based on successful Trimvent® principle.
  • T-bar deflects air up and down.
  • Unique linkages ensure constant friction and smooth action.
  • Vent supplied with screw covers, canopy features integral screw covers.
  • Special colours available on request.
  • Sleeve available for hollow profiles.
  • Felted gasket for increased performance.
  • When specified correctly, complies with British Building Regulations.
  • Effective in reducing pollutants in the home and improving Indoor Air Quality (IAQ), therefore reducing the risk of Toxic Home Syndrome.

Click here to read a case study on the successful application of the Trimvent 4000 Hi Lift on timber windows.

Click here to read a case study on the successful application of the Trimvent 4000 Hi Lift on aluminium windows.

Trimvent® 4000 Hi Lift Ventilator

Trimvent® 4000 Hi Flow Canopy

Product Product Code (L)
Length (mm)
Width (mm)
Projection Closed-Open (mm)
Free Area
Slot Detail
TV4000 HL 2200EA 255 Vent TA4042 255 17 28 - 38 2200 2169
HF 263 Canopy TA6053 263 24 36.5 3790
TV4000 HL 4000EA 400 Vent TA4041 400 17 28 - 38 4000 3989  
HF 441 Canopy TA6054 441 24 36.5 6763
TV4000 HL 6000EA 575 Vent TA4044 575 17 28 - 38 6000 5925  
HF 582 Canopy TA6004 582 24 36.5  9118

EA figures above and marked on vents are achieved when fitted to manufacturer’s recommendations. Tested in accordance with BS:EN 13141-1 (2004).

Through Sash

Through Add-on Section

Manufactured From

Aluminium 6063 HIT T6, component parts POM & PP (UV Stable).

Recommended Screws

3.5mm (No.6) Round Head or equivalent.


Tested in accordance with BS EN 13141-1:2004 (air flow, air leakage and weather tightness).

Acoustic performance tested in accordance with BS EN ISO20140-10:1992, BS EN ISO140-10:1991 and single figures to BS EN ISO717-1:1991.


(Full test details available on request)

Equivalent Area – See above.

Free Area – See above.

Air Leakage (m³/hr @ 50Pa) – 0.99 (4000EA version).

Water Resistance (Pa) – 600.

Acoustic D n,e,w (+/-) – vent open 32 (0;1), vent closed 43 (0;-1).


Suffix product code with: -020 (white), -001 (SAA) (Canopy -026), -023 (brown).

Other colours available contact sales for details

More information / 01206 713801