The 6FT x 5FT 6 Inch Ultra Heavy Duty Closeboard Fence Panel - Pressure Treated Brown is the extra-support version of our 5ft 6in closeboard panel, manufactured in-house by East Coast Fencing for near-full-height rear and side boundaries where strong screening is wanted but you deliberately want to remain below the 1.8m panel height. It measures 1830mm wide by 1650mm high with a listed depth of 45mm. The overlapping feather edge construction provides the traditional closeboard appearance, but the Ultra specification is aimed at customers who want more rail support through the height of the panel.
This 1650mm Ultra panel moves to five backing rails, one more than the standard panel at the same height. Near-full-height fencing has more area exposed to wind and more leverage between its top and bottom edges, so the extra fixing line is most meaningful here as part of a complete fence with correctly set posts. It is a construction upgrade, not permission to use undersized or poorly installed posts.
This Ultra Heavy Duty panel uses 5 75 x 32mm backing rails, compared with 4 rails on our standard 5ft 6in closeboard panel. The feather edge boards are fixed across those rails, so the additional support point reduce the unsupported span between fixings and make the panel stiffer as a complete unit. That is the practical reason to choose Ultra: not a different decorative style, but a more heavily supported version of the same closeboard principle. The panel remains unframed and is finished with weather capping along the top edge.
The timber is pressure treated and supplied in brown. For customers comparing the two treatment colours, the brown finish gives the darker initial appearance while the construction specification is what determines the standard-versus-Ultra difference. Use the closeboard fence panels category to compare the standard and Ultra versions at the same height rather than assuming that every closeboard panel has the same number of rails.
The extra height means careful post setting and support at the base become increasingly important. Plan the complete bay, including any gravel board, before choosing post length so the finished visible height and below-ground fixing are considered together. On an Ultra panel, the extra rails do not remove the need for a properly built supporting fence. Pair the panel with suitable fence posts, keep posts plumb, and check the actual bay before fitting. On longer or more exposed runs, consistent post spacing and a straight base line are just as important as the panel specification itself.
Keep the bottom of the timber panel away from persistent ground moisture. A gravel board can take the low-level contact and splashback that would otherwise reach the feather edge boards, while also giving the panels a consistent line to sit above. If the panel needs to be reduced in width for a non-standard opening, cut carefully and re-treat fresh timber surfaces after trimming. Choose this Ultra version when the additional rail support is a meaningful benefit for the boundary, rather than simply because it carries a heavier-duty name.
