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We would like to thank you for your interest in our products and look forward to speaking to you soon.

Order Info


conservation sleeved wall vent kits - for imperial bricks

Order Code: PASS 230SQPGBK


Internal Grille Option: Plaster

Product Options: PASS 230SQPGBK, (Iron Effect)

Single Kit: £120.00 inc. VAT (£100.00 ex. VAT)
  • Purchase 2 at £114.00 (£95.00 ex. VAT) each
  • Purchase 3 at £110.40 (£92.00 ex. VAT) each
  • All prices include mainland UK delivery (exclusions apply )

For higher volumes please call 01799 528528 for a quote

Iron Effect Finish Over a Stainless Steel External Metal Airbrick

  • Maximum water vapour transmission 2.3 litres per 24 hours
  • Maximum floor area per vent kit equals 20m2
  • Main tube length (open), 340mm
  • Main tube length (closed), 240mm
  • To fit nominal 250mm x 175mm aperture.
  • Internal grilles in white plastic, plaster, brass & stainless steel with built in fly screens. Plastic version has extra coverage for ease of retro fitting.
  • Instructions are included

+/- 5mm, imperial bricks are 75mm high and 225mm long (3 x 9").


See our extensive range of Passyfier® Core Vent Kits for single storey, two storey and high rise applications.

Passyfier Vents are used as an aid to help control humidity and are NOT to be used as a method of providing ventilation to any gas, oil, or solid fuel appliance. See our ArrestAir-Pro range for air combustion venting.

Plastic* - Most Popular
Plastic Grille
Plaster Grille
Laquered Polished Brass**
Brass Grille
Brushed Stainless Steel**
Plastic Grille

*Smaller plastic grille available, size 263 x 164 x 9mm depth.
**Denotes extra cost incurred.


See our Technical Overview for both the Passyfier® Sleeved and Core range of products.


  1. Allow one vent per room with a maximum floor area not exceeding 20m2.
  2. In an open plan living room allow for two vents opposite each other.
  3. Use the compatible wind blast cowl, with every vent in exposed or coastal locations. Use in conjunction with mechanical extraction in kitchens and bathrooms.
  4. Kill any mould that exists on the floor, wall and ceiling surfaces with a good quality fungicidal wash before redecorating.
  5. Install the Passyfier vent at a high level in retrofit and new-build applications if possible.
  6. Use the Passyfier Sleeved Vent Kit wherever practical to maximise the transmission of water vapour.
All prices include mainland UK delivery (exclusions apply )

Get Help or Advice!

The Condensation Shop offers a wide range of products to suit numerous condensation and damp related issues.

If you would like assistance in selecting the correct product for your specific problem please call our helpful Sales Team on 01799 528528, during normal opening hours.