Trimvent Select E18

Recessed clip-fix slot ventilator BUY NOW

For use on PVCu windows

Trimvent Select E18 is a semi recessed clip fix plastic slot ventilator that fits into an 18mm slot in a window overhead section or cavity closer and provides an Equivalent Area (EA) of 4200mm² when fitted with a pair of GS18 grilles. The E18 is ideal for both new build and refurbishment situations using PVCu windows and is available in a variety of colours.

Trimvent Select ventilators have been specified and fitted on millions of windows throughout the UK and mainland Europe over the last fifteen years.

System 1 System 2 System 3






Features & Benefits

  • Revised design to improve performance and Regulations compliance.
  • Unique occupant controllable tilting T-bar.
  • Deflects air up or down, or both.
  • Ideal for overhead sections.
  • Push to fit, no tools or screws required.
  • Minimal projection (when closed) for ease of window stacking.
  • Flange covers slot edges.
  • Clips into an 18mm slot.
  • For use with GS18 grilles.
  • Based on successful Trimvent® principle.
  • Sculpted finger recess.
  • Patented and registered design.
  • Remote control vent available.
  • 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.

Trimvent® Select E18 Ventilator

Trimvent® Select GS18 Grilles

Product Product Code (L)
Length (mm)
Width (mm)
Projection Closed-Open (mm)
Free Area
Slot Detail
E18 4200EA Vent TS1134212 372 24 13 - 23 4200 4247
GS18 210 Pair Grilles TS3184050 210 x 2 25 1.5 4200 4608

Note: Vent can only be used on sections with wall thickness of 2 - 2.5mm. Slot tolerences of ± 0.5mm are required.
EA figures above and marked on vents are achieved when fitted to manufacturer’s recommendations. Tested in accordance with BS:EN 13141-1 (2004).


Manufactured From

PBTP (UV Stable) & POM, GS18 – PP.


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) – 2.31 (with GS18).

Acoustic D n,e,w (+/-) – vent open 31 (-1;-1), vent closed 43 (-1;-2).


Suffix product code with: -392 (white), -315 (brown). Other finishes available depending on quantity.

More information / 01206 713801