ALTOPOLY 15mm x 25M Barrier Coil Butylene GREY 450mm² of airflow per 9

450mm² of airflow per 9 x 3 airbrick

This has meant that clear access to an underfloor void may be as far as 6 or 7 brick courses (525mm) below the level of an airbrick and potentially as much as 350mm from the outer face of the external leaf - traditional telescopic underfloor ventilators would not be able to achieve this without the use of additional vertical and horizontal extension sleeves

Ganymede 35mm Basin Mono Mixer Tap

Size: 15mm x 50m PB coil

Supplied in easy use rolls

ALTOPOLY 15mm x 25M Barrier Coil Butylene GREY 450mm² of airflow per 9Material: Polybutylene Colour: Grey Size: 15mm x 25m PB coil Connection: Push fit type WRAS approved BS 7291: 1990 Class S 25 year guarantee Altopoly PB is an extruded multi layer pipe consisting of a polybutylene inner with a middle layer constructed from EVOH and manufactured to meet all requirements of BS 7291: 1990 Class S. The construction of each Altopoly PB coil features a 5 layer EVOH barrier. All materials used in construction are WRAS