Flex Form Install CollarConstructing a fire pit with pavers? This fire pit paver collar is essential it fits beneath the top row of pavers, offering support for your fire pit burner. To install, simply position the collar on the penultimate level of pavers, lay the top row of pavers on the collar, and then situate your burner pan within the pavers, ensuring the edges are supported by the paver collar. This method results in an easy, durable, and long lasting paver fire pit.