Our 2lb Charcoal Ester Foam Pad comes in 24" x 27" sizes at varying thicknesses. Charcoal ester foam is routinely used for pick 'n pluck case foam, and has a texture and density similar to what you'd find in your couch cushions.
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Transcript>WGAN-TV Four Hard Cases for Matterport & How to
MyCaseBuilder
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Proof Research Terminus Case + Custom Foam
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