Side quality is whatever: deburring, brushing

https://telegra.ph/Roofing-System-Vents-that-Tell-the-Truth-Coppers-Century-of-Efficiency-in-Demanding-Climates-07-05

Edge quality is whatever: deburring, brushing, and micro-grain sanding prepare surface areas so coverings bond evenly and exposed joints read as refined, continuous aircrafts.