DIY mattress, need 1" poly foam for a king size

Where can we order 1" poly foam for a king size diy mattress base layer from a reputable supplier?

Hi MimiTina,
Welcome to the Mattress UnderGround.

You can check here, or you can query, a few of our Trusted Members, like @DIYMattress , @Arizona_Premium or @Latex_Mattress_Fact1. They have been around the block quite a few times, they may have a better suggestion for you.

Thank you! I appreciate the suggestions.

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