Planet Waves O-Port LARGE Black PWOPBKL

The O-Port will make any guitar, from beginner to custom, sound richer, fuller, and louder, with more clarity and better projection. The O-Port material is custom blended for flexibility to prevent damage to your guitar finish and inlays. Your O-Port will suppress feedback and give your acoustic or acoustic electric guitar a fuller sound with more volume, better clarity and enhanced projection.
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Large - Fits 3.875" to 4" - (9.843 cm to 10.16cm)