LVR75 – Rytons Round Louvre Ventilator (124mm Dia.)

General Details

LVR75 – Rytons Round Louvre Ventilator (124mm Dia.)

  • Circular louvre grille.
  • Suitable for internal and external use.
  • Low profile fixed open louvres allow a high air flow.
  • Compatible with Rytons 125mm dia. AirCore® Tubes.
  • U.V. stabilised to slow down the effects of sunlight.

Free Area:

  • 8,000mm² (80cm²) per unit.


  • 124mm Overall Dia. x 120mm Internal Dia. x 43mm D (including louvres) (see image gallery above).
  • CAD drawing available by email.


  • White: LVR75WH (bagged LVR75WHBG).
  • Terracotta: LVR75TC (bagged LVR75TBG).
  • Buff/Sand: LVR75BS (bagged LVR75BS).


  • U.V. stabilised polypropylene.


  • Core out a 120mm diameter hole and push into position.  Fasten with mastic or mortar if necessary.

Handling Information:

  • Weight: 0.037kg each.

Reference Material:

  • The Building Regulations, Approved Document J.
  • The Building (Scotland) Regulations, Mandatory Standard 3.21.
  • The Building Regulations (Northern Ireland), Technical Booklet L.
  • British Standard BS 5440-2.
  • For venting decorative fuel effect gas fires refer to British Standard BS 5871-3.

NBS Plus Specification: