I-Built has introduced an easily specified lintel design with HD7 certification that will cover all single-storey, 5.4 metre wide garage door lintels that support light roofs, roof loads up to 3.6m, roof pitches up to 35º and in all wind zones up to Extra High.

The 295 x 85 cambered 17C is the strongest and most popular in the range of I-Built products. Its engineered performance is backed by the HD7 software and I-Built Design and Installation Guide.