TIP: Stainless steel is just that: stain-less steel, not stain-proof steel. If installed in a very corrosive environment, even 316 “marine grade” stainless steel can show a surface discolouration known as “tea-staining”. This can be protected against with stainless steel protectors and polished off with stainless steel cleaners.
*HCB: 0mm | *SCB: 0mm | Height of fitting: 40mm
*HCB & SCB clearances of 0mm does not mean that you can drill a hole in solid concrete or wood and install downlight. You must always allow for heat dissipation.