LVMIXWH – Rytons Mixed Box of Plastic Louvre Ventilators

General Details

LVMIXWH – Rytons Mixed Box of Plastic Louvre Ventilators

  • Handy box of 32 mixed size white plastic louvre ventilators.
  • 7no 9×3, 18no 9×6 and 7no 9×9 all bagged and barcoded for display.
  • Suitable for internal and external use.
  • Embossed with DO NOT BLOCK.
  • U.V. stabilised to slow down the effects of sunlight.


  • 9×3: 271mm L x 95mm H.
  • 9×6: 271mm L x 171mm H.
  • 9×9: 271mm L x 247mm H.

Free Area:

  • 9×3: 8,800mm² (88cm²) per unit.
  • 9×6: 17,760mm² (177.6cm²) per unit.
  • 9×9: 26,500mm² (265cm²) per unit.


  • White.


  • U.V. stabilised high impact polystyrene.


  • Position over opening and fasten into place.

Handling Information:

  • Box quantity: 32 number.
  • Box weight: 3.2kg.

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.