Cut from premium grade EVA foam, these foam mats are designed to sit between your top plate and PCB. They are 4mm thick and with a standard 1.5mm plate, they will compress about 10% to create a single composite sandwich.
Guaranteed to reduce rattles, vibrations and dampen the sound of keystrokes. It makes bad switches sound good and fake switches sound real. It will increase hair growth in places you want it and eliminate hair where you don't. If you don't feel 10 feet tall while typing on a keyboard with this foam inside, why, you're the one who's defective and should be returned for your own money back!
No sharks were harmed in the making of these plates.
** Important Information Regarding Foam **
Thickness on this current batch of foam is 4.2mm to 4.5mm, so fit will be a little tighter than normal. It still works great, it just requires a little extra pressure while soldering your switches in place.
Works as advertised, no more ping and greatly reduced inconsistent sound for tray mount. Would buy again!