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keyboardsimulators

Kailh BOX Red

Linear

The protected linear: Kailh's box stem seals the contacts against dust and splashes while cutting stem wobble. A 45 g workhorse with a clean, tight clack.

simulated from real specssound loads on first tap

Sound & feel

BOX Red wraps the switch contacts inside a sealed box structure within the housing, the design that gives the family its name and its IP56-class dust and moisture protection. A welcome side effect is a squarer, more stable stem with noticeably less keycap wobble.

The stroke is a light 45 g linear over a slightly shortened 3.6 mm travel, and the sound is clean with a mildly hollow note from the internal box geometry. Consistency across a batch is a BOX-family strength.

It suits desks where drinks, dust, or crumbs are a real hazard, and taller keycap sets that amplify wobble on conventional stems.

One caveat for old stock: for part of BOX's early production Kaihua widened the stem from 1.30 mm to 1.32 mm at a customer's request for a tighter keycap fit, and those switches were known to crack or stretch Cherry-profile keycap mounts, especially thin ABS. Kaihua reverted to 1.30 mm in 2018 and current production is fine, but be careful pairing an old bag of BOX switches with vintage caps.

Sound on this page is synthesized from the switch's published specs and community-documented character: an honest simulation, not a recording. We're progressively replacing simulations with our own studio recordings. How our sounds are made

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Frequently asked questions

What does the Kailh BOX Red sound like?

clean, slightly hollow clack; tight and consistent. Use the player on this page to hear simulated press and release sounds derived from its real specifications.

Is the Kailh BOX Red good for gaming or typing?

As a linear switch with 45g actuation force and 1.8mm pre-travel, it suits fast, repeated presses, which is why linears are a common gaming pick. It types perfectly well too if you like a smooth, uninterrupted keystroke.

How heavy is the Kailh BOX Red?

45g actuation, 60g bottom-out (our estimate). Note that Kailh officially rates actuation force and publishes no bottom-out, so the bottom-out above is our derivation. Brands differ, so check the basis when comparing switches.