If your staircase turns at a landing, you’ve probably come across the term Double 90 Handrails—and wondered if you actually need one. This guide breaks it down in the simplest way possible. You’ll learn what this fitting does, why it matters for safety, and which stair designs require it. We also explain how proper handrail transitions (like easing fittings) create a smooth, continuous grip, which is key for both safety and clean design.
If you’re building or upgrading your stairs, this article will help you decide whether a standard part is enough—or if a custom-built solution is the better choice for a perfect fit.