When do you use a horizontal vs. vertical constant hanger?

The only difference between ahorizontal and vertical constant is the physical space that they fill up. Horizontal constants are used mostlywhen vertical space is not available; the spring can is aligned horizontally,while permitting vertical movements. Verticalconstants are used mainly when horizontal space is not available.

120 Constant Spring Supports With Corrosion Resistant Coating Manufactured On A Rush Basis For Off Shore Drilling In Malaysia 1
Long Travel Horizontal (200) U Type Constant