For this high-level windows project in Kirkby, opening checks, frame fitting and finishing are treated as one sequence. Opening Configuration leads the review, so we confirm fixed and opening sections against ventilation, access and furniture or worktop positions, with opening configuration kept as the lead check for this high-level windows scope. We use glazing beads and frame dimensions around handle position, restrictors, opening angle, installation access and internal reveal, ensuring we check bead seating and corner joints after the glass is installed and confirm manufacturing dimensions against the surveyed opening before the replacement frame is ordered, with opening configuration kept as the lead check for this high-level windows scope. The last technical check is fixing points; we position frame fixings to suit the opening, frame profile and surrounding substrate, with opening configuration kept as the lead check for this high-level windows scope. This supports high-level glazing configured for practical controlled ventilation.