The spacing of materials in clearance reduction systems must use what type of spacers?

The correct answer highlights the necessity for non-combustible spacers in clearance reduction systems. These systems are designed to reduce the required distance between heat-producing equipment and combustible materials, thus minimizing fire risks. Using non-combustible spacers ensures that the materials used can withstand high temperatures without igniting or melting, thereby providing an essential safety measure in commercial cooking operations.

Non-combustible spacers contribute to maintaining a safe environment by providing adequate separation between cooking equipment and surrounding structures. This compliance with the NFPA 96 Standard is crucial, as it helps prevent fire hazards that could arise from improper installation and insufficient spacing. The use of non-combustible materials aligns with fire safety protocols, ensuring those who work in and occupy these spaces are protected from potential ignition sources.