Styrofoam plugs used for holes in drywall- recessed to accept spackling compound. They absorb little moisture, thus require fewer layers of spackling for a smooth finish.
J&R Products Plug, 2 in, Styrofoam
Material |
: |
Styrofoam |
Size |
: |
2 in |
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Catalog
https://assets.unilogcorp.com/267/ITEM/DOC/J_R_Products_WP_100PR_Catalog.pdf
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SDS
https://assets.unilogcorp.com/267/ITEM/DOC/J_R_Products_FP_200_SDS.pdf