Window performance on this security-focused windows installation in Longton depends on more than the frame profile. We start with frame dimensions and confirm manufacturing dimensions against the surveyed opening before the replacement frame is ordered, with frame dimensions kept as the lead check for this security-focused windows scope. frame alignment is then coordinated through locking points, hinges, keeps, handle operation and frame alignment, so we check the frame for line, level and square before glazing and final tightening, with frame dimensions kept as the lead check for this security-focused windows scope. Before final finishing, we review restrictors and configure restrictors where controlled opening forms part of the brief, with frame dimensions kept as the lead check for this security-focused windows scope. We finish with hardware adjustment and adjust hinges, handles and locking hardware after glazing so operation remains smooth, supporting replacement windows with hardware performance checked as part of final adjustment, with frame dimensions kept as the lead check for this security-focused windows scope.