LV177 – Rytons 9×6 Louvre Ventilator

General Details

LV177 – Rytons 9×6 Louvre Ventilator

  • Plastic louvre grille.
  • Suitable for internal and external use.
  • Low profile fixed open louvres allow a high air flow.
  • Embossed with DO NOT BLOCK.
  • Compatible with Rytons 9×6 AirLiner® cavity liners.
  • U.V. stabilised to slow down the effects of sunlight.

Free Area:

  • 17,760mm² (177.6cm²) per unit.


  • 271mm L x 171mm H (see image gallery above).
  • CAD drawing available by email.


  • White: LV177WH (bagged LV177WBG).
  • Brown: LV177BR (bagged LV177BBG).


  • U.V. stabilised high impact polystyrene.


  • Position over opening and fasten into place.

Handling Information:

  • Box quantity: 25 number.
  • Box size: 28cm W x 18cm H x 26.5cm D.
  • Box weight: 2.5kg.

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 Specification: