Aluminium construction - easy to lift and lower with counterweight. Locks up or down provision. Gates 4m or less do not usually require a balance box. Pivots on brass bearing bushes. Supplied easy assembly with latch post and relevant fixing bolts (except foundation bolts if floor mounted). Finish undercoat and two top coats (special colours available on request), note minimum clearance of 1000mm required behind pivot post to allow correct operation. Fixing details for base plate sizes etc supplied. Skirt to attach below the boom is available - POA.