A steel spring instead of gas, and both tiers rated separately
A two-tier converter on a steel-wire mechanical spring rather than a gas cylinder, publishing both surface dimensions and a separate rating for each tier.
SANODESK two-tier mechanical-spring converter, 32 inch
Best for: A standard desk where the lift mechanism should have nothing in it that can leak.
Two numbers on this listing are worth more than the headline. The main surface is rated to 33 lb and the keyboard tray to 4.4 lb — separately, because they are different structures carrying different things, and a converter that publishes one figure for both is telling you less than it seems. Both surfaces are given in full, 31.5 by 16.3 in on top and 28.3 by 12.2 in below.
The mechanism is a wound steel spring rather than a gas cylinder, and SANODESK argues the case rather than asserting quality: steel wire “eliminates risks of air leakage or tension loss over time”. That is a real difference in how the two fail. A gas strut gets softer over years; a steel spring stays as it was or breaks. The FLEXISPOT on this shelf uses a spring too; most of the other risers use gas or pneumatic lifts.
The rest is assembly and a gap. The keyboard tray goes on with the supplied screws and your own screwdriver; the manufacturer reference is the single character “1”; and no weight is published for the converter itself, which is what it adds to the desk. At about $110 it is the lowest-priced two-tier converter among the American listings here. SANODESK also sells it 36 in wide under the same reference and with the same figures, which is the version to look at if two monitors need more than 31.5 in.
Read on the day this page was built: $109 at the American Amazon shop.
Read from Keepa on the day this page was last revised; stock and price both move without notice.
Best for: A standard desk where the lift mechanism should have nothing in it that can leak.
Prices quoted in this text were read on 2026-10-13. The live price is at the top of the page.
A gas cylinder is smoother and quieter; a wound steel spring cannot lose pressure. SANODESK makes the argument explicitly — the steel wire construction "eliminates risks of air leakage or tension loss over time" — and the FLEXISPOT converter alongside it in this hub makes a similar case. Neither publishes a cycle figure, and the gas and pneumatic risers on this shelf are no worse for it on day one; the difference, if any, shows years later.
SANODESK sizes the 31.5 by 16.3 in top for dual monitors. Keep the screens and their stands within the 33 lb rating, and measure the stands' footprints against the 16.3 in depth, which is the tighter of the two figures.
Yes. SANODESK also lists a 36 in converter under the same manufacturer reference, with bullets identical word for word, the same 4.7 to 19.6 in travel and the same 33 lb and 4.4 lb ratings. It is the same product in another width, so the choice between them is the desk and the screens, not the build.
A pneumatic squeeze-handle converter on an aluminum frame, rated to 33 lb — and the only listing on this shelf that names the material of its own work surface.
Best for: A converter adjusted several times a day, where a squeeze handle beats a spring you fight.
A fully assembled two-tier converter with a dual-handle lift and eleven discrete height settings — and the only listing on this shelf that publishes no weight capacity at all.
Best for: A desk where it must work out of the box and the height must land in the same place every time.
The middle of three VIVO risers on this shelf, with a pneumatic spring lift, touch height locking and a 26 lb rating between its 22 lb and 33 lb siblings.
Best for: A monitor and a laptop together, where 22 lb is too little and 33 lb is more than needed.
A set of two oversized cable and power-supply trays, each on a metal frame rated to 8 kg (17.6 lb), with padded no-drill clamps (or screws) and cable clips included.
Best for: A desk with several bulky power adapters and chargers, not just one or two thin cables.
A desk-clamp bracket that mounts an existing power strip (40 to 60 mm (1.57 to 2.36 in) wide) underneath the desk, with an integrated rear cable channel.
Best for: Mounting an existing power strip out of sight, without buying a full cable tray.
A clamp-mounted strip with its five outlets spread across three faces so bulky adapters do not crowd each other, rated at 1440 joules with a 15 W USB-C port.
Best for: A desk with several wall-wart adapters that will not sit side by side on a flat strip.