Rytons Non-Telescopic Passive Vent Airliner Sleeve Extension

Rytons 9×3  passive vent liner sleeve extension features internal baffles to prevent light and draughts entering the property, and an external water baffle to prevent rainwater from entering the cavity.

SIZE: 220mm W x 71mm H x 230mm L (see image gallery)

FREE AREA: 8,000mm² (80cm²) per unit.

Note: Air space may be reduced by internal and external grilles. External water baffles prevent transfer of water across the cavity. Contains an internal baffle to reduce light and draughts. Rigid telescopic cavity liner. May be finished internally with a 9×3 louvre or hit & miss ventilator.