TinnerFlow™2nd YearForeman Skills & Jobsite ProductivityCheck first
Fasteners must stay in the mounting flanges, clear of moving parts. Remove long screws, inspect the blade tracks, and replace with the correct fastener length/location.
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Adjustable louvers have internal blade tracks, linkages, and gear bars inside the casing. A long screw driven blindly through the wall can hit the moving parts and lock the blades.
Back out the long fasteners, inspect for bent linkage or damaged tracks, and reattach only through the approved mounting flange or sleeve area. Use the fastener type and length called for by the louver detail.
Use this as training guidance. Foreman direction, approved drawings, project specs, manufacturer instructions, employer safety policy, and AHJ/code requirements always control the final answer.