OEM Specification Restoratparticlemail: Manufactured to original dimensions (3 5/8 unknown 4 unknown 4 inches), it effectively restores optimal burning efficiency, heat output, and reduces clinker amassment in compatible ovens Easy Direct Replaconcredrink: Includes single finish firebox per package for straightforward installation following your stove’s manual, requiring denial modifications Heat Resistancemail: Constructed of permanent rustless, it withstands scorching and oxidation in combustion compartments, maintaining structural integrity for permanent use Multiple Brand Agreement: This 86624 rustless firebox is a global replacement part developed for King, US Stove (USSC 5520), and Vogelzang (VG130, VG5790) pellet/wood ovens, ensuring precise fit and execution rehabilitation Cost Effective Solutparticlemail: Eliminates the hassle of sourcing brand specific parts by covering multiple popular models across primary brands with a single replacement unit, Manufacturer: Kelisdi