Florida Building Product Approval (FL#) and Miami-Dade's Notice of Acceptance (NOA) are both certifications that demonstrate a product's compliance with certain building code standards in Florida.

The main difference between FL# and NOA is the organization that issues them and the scope of their coverage.

FL# is a statewide product approval system administered by the Florida Building Commission. It covers all counties in Florida and is used to certify that a product meets the state's building code requirements. FL# is recognized by all building officials in Florida, and it is generally required for products used in construction projects that are subject to state building code regulations.

On the other hand, NOA is a local certification system administered by the Miami-Dade County Building Code Compliance Office. It covers only Miami-Dade County and is used to certify that a product meets the county's building code requirements, which are some of the most stringent in the state. While NOA is not required statewide, many building officials in other parts of Florida also recognize it as a sign of high quality and durability.

In summary, FL# is a statewide certification while NOA is a local certification specific to Miami-Dade County. Both certifications demonstrate that a product meets certain building code standards, but FL# is generally required statewide while NOA is required only in Miami-Dade County.