Skip to content

Trimvent® 90 Hi Lift

High performance aluminium slot ventilator


Trimvent 90 Hi Lift is a semi-recessed aluminium slot ventilator that fits over a 16mm slot in a window and provides an Equivalent Area (EA) of up to 8600mm² when fitted with the Hi Flow canopy. The TV90 Hi Lift is ideal for both new build or refurbished situations using any window material, and is also available in a variety of colours.

The Hi Lift design improves the Trimvent range to offer increased ventilation. It gives optimum airflow (and therefore EA) utilising existing Trimvent slot sizes and vent lengths, making them 60% more efficient than previous models.

It has been specifically developed for recent revisions to Part F of the Building Regulations for Ventilation (England & Wales), is optimised for use with the Scottish Technical Standards and to improve performance for requirements throughout the UK and Europe.

The Trimvent 90 range of ventilators has been specified and fitted on millions of windows throughout the UK and mainland Europe over the last 35 years.

Suitable for

  • PVCu

Features & Benefits

  • Uprated design to improve performance and Regulations compliance
  • T-bar deflects air up and down
  • Compression closing action
  • For use on 16mm slot
  • Based on successful Trimvent® principle
  • Unique linkages ensure constant friction and smooth action
  • Canopy features integral screw covers
  • Special colours available on request
  • Felted gasket for increased performance
  • When specified correctly complies with Building Regulations

Technical Information

Technical Information


Product Product Code (L) Length (W) Width (P) Projection Closed-Open EA (mm²) Free Area (mm²) Slot Detail /
Free Area of Slot (mm²)
TV90 HL 2500EA 300 vent TA634 300 22 17 – 27 2500 2649
HF 303 canopy TA6057 303 24 36.5 4458
TV90 HL 4300EA 425 vent TA631 425 22 17 – 27 4300 4184
HF 441 canopy TA6054 441 24 36.5 6763
TV90 HL 5000EA 525 vent TA635 525 22 17 – 27 5000 5308
HF 529 canopy TA6058 529 24 36.5 8233
TV90 HL 8600EA 835 vent TA633 835 22 17 – 27 8600 8368
HF 844 canopy TA6056 844 24 36.5 13493

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

This product does feature some protrusion into the slot. If the recommended slot size has been cut then the protrusion will not affect fitting or claimed performance.

Manufactured from

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

Recommended screws

3.5mm (No.6) Round Head or equivalent


Tested in accordance with BS EN 13141-1:2004 (airflow, 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) – 1.09 (4300EA version)
Water Resistance (Pa) – 600
Acoustic Dn,e,w (+/-) – vent open 31 (0;1), vent closed 42 (-1;-2)


Suffix product code with:
-020 (white), -001 (SAA) (Canopy -026), -023 (brown)
Other colour options available. Please contact sales for details.



Manuals and Documentation

Trimvent 90 Hi Lift - Fixing Instructions

52.33 KB (English)

URL for Trimvent 90 Hi Lift - Fixing Instructions copied to clipboard.

Trimvent 90 Hi Lift - Operation and Maintenance Instructions

31.38 KB (English)

URL for Trimvent 90 Hi Lift - Operation and Maintenance Instructions copied to clipboard.


Trimvent 90 Hi Lift - Catalogue Page

1.46 MB (English)

URL for Trimvent 90 Hi Lift - Catalogue Page copied to clipboard.

Similar Products

Similar Products

Woman working at computer

Contact one of our experts

Whatever your query, please get in touch.