The Monument 358J Deep Box Immersion Spanner has an octagonal box ring at the base of a steel cylinder. The deep box design allows easy access to heaters that are surrounded by insulation or recessed. Supplied with a separate tommy bar. https://elecena.pl/product/27211786/monument-358j-deep-box-immersion-spanner 2024-11-10 https://elecena.pl/product/27211786/monument-358j-deep-box-immersion-spanner 2026-01-03