Wall mounting. Pennsylvania made 1/8in thick aluminum laser cut and formed thread racks, capable of holding 96 Isacord mini cones. This rack is able to hold any 1000m spools. The posts are 1.875in spaced evenly on centers and each post is 2.7875in long. The provided mounting holes are spaced at 16in centers for easily mounting to wall studs, not all mounting holes are needed. Overall dimensions are 23.125in Wide x 29.5in High x 2.75in Thick. Designed specifically for Isacord 2922- thread. Threads shown in the pictures are not included.