I have told my Guvnor about these we are doing a bridge over the water he wants to know if you do em in 60 ft lengths cause that's how wide the bridge is. He is sweating his **** out about how many of those funny board clip things he has to buy. Cheers geez.
I have some in 3 meter lengths that would do 13 boards but you start to struggle to fix regularly to the ledger, I could probably do them to suit your beam spacings if you know them and I could quote.