The Hearth Riser Block Set includes three risers used to elevate the Hearthstones which install directly on top of the Hearth Risers.  Hearthstones install directly on top of Hearth Riser Blocks to complete the full hearth.  The width of the three hearth risers will be sufficient for most fireplace surrounds, however single Hearth Riser Blocks are available (sold separately) to expand the length of a hearth. 

Set includes 3 Riser Blocks (left, center, and right).