Flexible Adjustment & Vertical Stacking: Enjoy full motion with tilt, swivel, and height adjustment, or stack two 49" monitors vertically to save a lot desk space. The gas spring system allows smooth, one-finger positioning without sagging. Pro tip: Stack two 49" screens to save 80% space in small home offices! Durable Build & Easy Installation: Made of preminum aluminum alloy and steel, the gas spring inside the arm has been tested for 20,000+ adjustments and meets safety standards. All tools and hardware are included for a quick 15-minute, tool-free setup Ultra-Wide Compatibility & Heavy-Duty Support: This heavy-duty dual monitor arm effortlessly handles Max up to 2x35" screens side-by-side or stacks two massive 49" monitors vertically. It holds up to 44 lbs per screen with stable support, fitting standard 75×75mm and 100×100mm VESA mounting patterns Ergonomic Design & Cable Management: Transform your desk into a productivity powerhouse! Ideal for programmers, s