The Tecno Wall Cap (Rosette) is part of the Tecno Duct System; its easy to install and adds the finishing touches to an air conditioning, refrigeration, or heating installation by covering up unsightly pipework and giving a clean aesthetic.  This quality duct is fire resistant and weatherproof meaning it can be used internally or externally.
This 72mm Duct range is for pipe sizes up to 3/8" and 5/8" with 13mm insulation.