The Ancon ST1 is suitable for cavities from 50mm to 225mm and can be used for all types of building of any height, anywhere in the British Isles. The section that spans the cavity has a series of holes to provide water drips. This allows the same tie to be used in insulated cavities as well as open cavities.

ST1 - conforms to PD 6697
200mm	up to 75mm cavity	Box 250
225mm	up to 100mm cavity	Box 250
250mm	up to 125mm cavity	Box 250
275mm	up to 150mm cavity	Box 250
300mm	up to 175mm cavity	Box 250