400mm White Trickle Vents (internal and external fittings)

Price £4.94 (Inc. VAT)
£4.12 (Ex. VAT)
(31 reviews) Write a Review
Part Number:
VENT-400-White (RWS250000) (5055621405548)
In Stock
Delivery Cost:
Calculated at Checkout
White Trickle Vents

Trickle vents for UPVC windows and doors from RW Simon

400mm trickle vents in WHITE

Also available in Brown, Tan, Brown/White or Tan White



Trickle window ventilators ideal for both timber and PVC-u. Made from U.V. stabilised PVC-u, durable, easy to fit and fully tested. Internal canopy has a moveable flap to adjust and control airflow rate.


 400mm:   1 x internal canopy, 1 x external canopy, and fixing screws



Other lengths available: Click here to see other sizes

300mm - White, Brown, Tan, Brown/White or Tan White            

595mm - White only.    Note: this will consist of 4 x 300mm section with 2 centre joining pieces.                   

795mm - White only.     Note: this will consist of 4 x 400mm section with 2 centre joining pieces.                     







Information from the manufacturer


Technical Specification




  • Equivalent air rates of 2500EA and 5000 EA as required by approved document "F" 2006 for England & Wales.
  • A robust smooth slim elegant rounded design.
  • Snap on quick fit end caps.
  • Positive open and close action.
  • 3 colour options; standard white, dark brown (mahogany),tan (light oak)
  • Can be fitted to give updraft or down–draft.
  • Suitable for PVCu, timber and aluminium windows.
  • Sleeves available to ensure full compliance with BS7412:2002 .


Design Criteria

  • Tested to BS 13141-1:2004 - Equivialent area figures as required by approved document "F" 2006.
  • Tested in accordance with BS EN 1026 & 1027:2000.
  • Manufactured from a 'lead–free' UV stabilised high quality PVCu.
  • Achieves a water tightness limit of 400 p.a.
  • Positive open and close action.



  • Watertightness - 400 pa.
  • Independently acoustically tested in accordance with BS EN20140-10:1992,
  • ISO 140-10:1991.




Tech Spec


For the full measuring guide click Here


31 Reviews Hide Reviews Show Reviews

  • 5
    400mm trickle vent

    Posted by Trevor on May 01, 2019

    Easy to fit, looks good and provides the ventilation previously lacking in a small fixed window.

  • 5
    400m white trickle bar

    Posted by Christine Dunn on Jan 09, 2019

    very happy with purchase

  • 5
    Top materials

    Posted by Otis on Dec 04, 2018

    I was struggling to find then on builder shops around
    It's very easy
    High quality
    Very good delivery time

  • 5

    Posted by David Hatchett on Oct 22, 2018

    Great product. Arrived fast and easy to fit.

  • 5
    400mm vents

    Posted by Dave Warner on Sep 24, 2018

    Bought to replace old vents in house we purchased easy to fit looks very smart

  • 4
    Good product

    Posted by Frank on Aug 29, 2018

    Good product arrived on time

  • 5
    Arrived on time, fabulous fit, thank you.

    Posted by Ben on Aug 01, 2018

    Good value product.

  • 5
    Great trickle vents

    Posted by PCHC on Jul 14, 2018

    Easy to fit & look great, thank you. Just the thing to reduce temperatures during the hot weather.

  • 5
    Changed our blinds and needed internal trickle vents. Could not locate in stores so found these on line. Delivered in two days and exactly what we required

    Posted by Richard Rawlinson on Jul 13, 2018

    Excellent service