These cedar ridges are sold by the metre run.
The course size for these shingles is 270mm, so approximately 4 ridges per metre run are required.
Please note that these may not match old cedar ridges (in size and thickness) on an existing roof if you are trying to patch them in, or if you are trying to match to any existing roofs.
NB - these ridges need to be fixed with stainless steel nails (not included). It is also highly recommended that DPC is rolled out and fixed over any hips or ridge to waterproof before then adding the hips/ridges over the top.