How is the clearance reduction system permitted when constructed with the appropriate thicknesses?

The clearance reduction system is permitted when constructed with the appropriate thicknesses, as long as minimum clearances are maintained. This principle is grounded in ensuring that the system still meets safety requirements while allowing some flexibility in design or installation. Maintaining the minimum clearances is crucial because it aids in preventing heat transfer to combustible materials, which is a critical safety aspect in commercial cooking operations.

By adhering to the specified clearances, the system can operate effectively without creating an undue fire hazard. This allows for the practical needs of space utilization and overall design while still adhering to the safety measures outlined in the NFPA 96 standard.

In contrast, options that suggest restrictions based on specific building types or reliance on verification by local fire authorities do not fully capture the essence of maintaining safety through clearances. Furthermore, stating that it is not allowed under any circumstances overlooks the possibility of design innovations that meet the required safety measures and standards.