Standard Curved Uprights Same height as headache rack, due to inward curves, it will interfere with hard folding tonneau covers. Adjustable Height Straight Uprights Adjustable height 20" to 27", does not interfere with hard-fold tonneau covers. Straight VS Curved Uprights Most hard-folding tonneau covers will interfere with the regular curved uprights of the rear ladder rack. If using this style of tonneau cover, we recommend upgrading to the straight uprights. Find this confusing? Contact us today for assistance.
