A mounting curb is recommended for installing your roof exhauster. This 18" high mounting curb is recommended for restaurant installations in accordance with NFPA-96. It features heavy gauge galvanized steel and welded construction with a 1.5" wood nailer and includes insulation, damper shelf and mitered 3" cant. The outside dimension of the square curb is 16 1/2".
The 721816V is for use with all SDB and STXD sizes 6-10, and STXB Size 8-10 model roof exhausters including single and triple phase models.