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Technical Information
| Size | Cavity Width | Product Code |
| 200mm | 50mm to 75mm | TTDT 200 |
| 225mm | 76mm to 100mm | TTDT 225 |
| 250mm | 76mm to 100mm | TTDT 250 |
| 300mm | 76mm to 100mm | TTDT 300 |
| Classification | Field of use Type of structure and frequency of tying |
Geographical location |
| Type 2. (Masonry: General purpose). | Suitable for masonry cavity walls of domestic houses and small commercial buildings of up to three storeys, i.e. not greater than 15m in height, comprising two leaves of brick or blockwork of similar thickness in the range 90mm to 150mm. May be suitable for cavity walls having leaves of disperate thickness or stiffness or for cladding walls in high rise buildings, but should only be used in these situations if shown to be of adequate performance by calculation. Density not less than 2.5 ties per square metre. | Flat sites where the basic wind speed is up to 31m/s at an altitude no more than 150m above sea level. |