Rytons Periscope Underfloor Ventilator – Bba Approved

Size:

• 218mm W x 250mm D x 368mm H (fully extended and with Rytons Multifix Air Brick fitted) (see image gallery above).
• CAD drawing available by email.

Free Area:

• 7,750mm² per unit (with Rytons Multifix Air Brick fitted).

Colours:

• Black.

Composition:

• Polypropylene.

Installation:

• No special fixing required.  Installation is easily carried out as work proceeds.  Adjust the height of the Periscope to suit brick courses and height of floor (cutting if necessary).

Accessories:

• To vertically extend more than 5 brick courses use Rytons Periscope Vertical Extension PUFVVEXT.
• To horizontally extend through wide inner or outer leaves use Rytons 9×3 Non-Telescopic Cavity Liner TCL8LNR.

Handling Information:

• Box quantity: 20 number.
• Box size: 81cm W x 45cm H x 31cm D.
• Box weight: 8.4kg.

Reference Material:

• Suspended Timber and Suspended Concrete Floors: Ventilate the underfloor space by providing ventilation in two opposing external walls so that the ventilating air will have a free path between opposite sides and to all parts.  Ventilate voids by openings providing not less than 1500mm²/m run of the external wall or 500mm²/m² of floor area, whichever gives the greater opening area.  Provide ventilation in internal sleeper walls or similar obstructions to maintain the path of air.
• The NHBC recommends ventilators for suspended timber floors be spaced at not more than 2m centres and within 450mm of each end of any wall.
• The Building Regulations state any pipes needed to carry ventilating air should have a diameter of at least 100mm.
• Also refer to The Building Regulations 2000, Approved Document C,
• The Building (Scotland) Regulations, Mandatory Standard 3.4,
• NHBC Standards,
• British Standard BS 5250.