MSI Flagstone Products

Irregular, split MSI flagstone fits together like a giant puzzle to create spectacular pathways, patios, pool decks, interior flooring, fireplaces, and other decorative features. MSI Flagstone is quarried in thousands of locations worldwide, and each type of stone boasts its own unique colorful patterns of veining and striations. MSI’s collection of flagstone includes slate, quartzite, and limestone in a variety of sizes.

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Plainview Building Supply

1670 Islip Ave. Brentwood, NY
11717 Phone: (631) 273-3323

Rockville Centre Building Supply

28 Mill Road Riverhead, NY
11901 Phone: (631) 208-1630