Monitor sizes commonly span about 13–32 inches (some listings start at 13 or 17 inches, and one listing notes up to 27 inches). Weight limits per monitor vary widely by model — commonly from about 4.4 lb up to 22 lb, with many listings capping around 17.6–20 lb.
Most arms accept standard VESA patterns 75×75 mm and 100×100 mm; listings repeatedly reference those two hole spacings as the supported mounting patterns.
Many dual monitor arms come with interchangeable clamp (C‑clamp) and grommet (through‑desk) mounting options, so you can attach the mount using a clamp at the desk edge or by securing it through a desk hole.
Height and reach vary by model. Several listings state height adjustments around 16.3–17.5 inches and forward extension toward the user up to about 15.4 inches; one listing notes an additional column that can raise the VESA center to about 25.19 inches. Check the specific model for its exact height and extension specs.
Several descriptions highlight sturdy, heavy‑duty construction and tested gas springs; one model cites gas‑spring testing for 20,000 cycles. Overall durability varies by model, but many listings emphasize robust build quality and heavy‑duty components.
