Please read product description carefully below before selecting this product. This joist is not suitable for general deck installations and can only be considered for specific site installations. For deck installations we recommend to plan for 100mm in height of continuous net free area under the decking surface, this is to provide for ventilation and drainage. 40mm x 25mm composite joists are generally for use in small balcony areas where structural height is not possible. Ventilation and drainage need to be carefully considered when using this joist in a balcony area. This joist cannot be load bearing it must be fully supported. The joists MUST BE PREDRILLED before fixings are screwed to it.
| SPECIFICATION | |
| Brand | Whiteriver |
| Sub Brand | Portland |
| Unit Length of Piece (mm) | 3000mm |
| Unit Width of Piece (mm) | 40mm |