7 plank open wagons were the principal wagons used for transporting coal and were standardised by the RCH in 1923. They had a capacity of 12 tons; many were privately owned and carried on in use post nationalisation right into the 1960s

The Dapol O gauge model of the 7 plank open wagon features:

Finely moulded body and chassis with internal detail represented

Opening side doors

Finely applied livery and printed details

Profiled wheels and axels with brass bearing pockets

Metal sprung buffers

3 link metal coupling chain with sprung coupling hook