The steel window security compact was specced against the way this space is actually used, not against a brochure. At a glance Type: Keyed Vent Lock Material: Steel Fit: Aluminium Install: Casement Price: à§³6.64 The part most missed Set up as a keyed vent lock-class unit, it does the job without asking you to improvise. In practice First use: no break-in ritual required beyond a quick wipe and a glance at the label. Care: a rinse and dry cycle in the usual rhythm keeps it looking fresh. Daily duty: handles the regular routine without constant babysitting. Order it, use it for a week, and it becomes furniture rather than a purchase.