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Periscope PER

£15.00

Individual metric periscope plastic duct without an air brick.

Suitable for use with imperial air bricks possibly with the METIMP metric to imperial adapter and often used to divert air from outside and underfloor boards. Especially useful where external ground levels have been built up over the years. Can also be supplied combined with a metric air brick as PER3

Can be used with pervext extension when installing in walls higher than five brick courses or extended with a cavhext3 for non-standard deep walls

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