PB Fastener manufactures the P-2085 filler plug, which is black and designed to cover holes measuring 28-30 mm. This component is commonly used for cable mounting and as a grommet in various applications. Its primary function is to securely seal holes to prevent debris ingress into electrical panels or other enclosures. https://elecena.pl/product/28913064/pb-fastener-p-2085-filler-plug-black-closes-unnecessary-holes-1-piece 2025-06-06 https://elecena.pl/product/28913064/pb-fastener-p-2085-filler-plug-black-closes-unnecessary-holes-1-piece 2025-07-15