TinnerFlow™1st YearHand Tools & SafetyRED · Stop / Verify
Tighten them until the corner gaskets are uniformly compressed and the metal corners meet securely. * Do not over-torque with an impact gun until you warp or bend the duct flange out of shape. If you bend the flange, you create a massive air leak path that mastic cannot easily fix.
Tighten them until the corner gaskets are uniformly compressed and the metal corners meet securely. * Do not over-torque with an impact gun until you warp or bend the duct flange out of shape. If you bend the flange, you create a massive air leak path that mastic cannot easily fix.
Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.