Lintel to span 5m over glass sliding doors

I'm in the final stages of designing my new house.

I just purchased a set of glass sliding doors (4.8m x 2.4m). I need a lintel to go over the opening.

The wall height is 2740mm. It's a single storey, corregated iron, trussed roof with a roof load width of 4.5m.

There is about a 250mm gap for the lintel after taking into account the top plate and reveal etc.

What would be the best option for the lintel?

A light steel beam seems like the best choice, but I'd like some other opinions please.


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