400mm White Trickle Vents (internal and external fittings)

(37 reviews) Write a Review
VENT-400-White (RWS250000) (5055621405548)
In Stock
Calculated at Checkout
  • White Trickle Vents
  • White Trickle Vents
  • Trickle Vent Tech Spec
  • 400mm White Trickle Vents
  • 400mm White Trickle Vents
  • Trickle Vents Sizes and Specification
  • Brown Trickle Vents
Inc. VAT
Frequently bought together:


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


View AllClose

Additional Information

Delivered from just £1.86
View AllClose

37 Reviews

  • 5
    Trickle Vent

    Posted by Chris Mathews on Feb 24, 2020

    Product was as described

  • 4

    Posted by David Smith on Feb 24, 2020

    A much better trickle vent than the 18 year old origionals ones that these have replaced and at a reasoable price as I replaced 10 of them.

  • 5
    Perfect fit

    Posted by Paul Cruickshank on Oct 11, 2019

    Just exactly what I ordered fitted easily and good value for money

  • 5

    Posted by david on Oct 05, 2019

    very nice

  • 5
    Fitted our Anglian Windows ok

    Posted by Unknown on Jun 29, 2019

    We only needed to replace external vent which was a snug fit

  • 4
    all looks good

    Posted by the.plattens on Jun 24, 2019

    looks ok have not yet installed.

  • 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

View AllClose