Heavy-Duty Square-Groove Friction Stay

Heavy-Duty Square-Groove Friction Stay — Heavy-Duty Square-Groove Friction Stay is the reinforced YX29 configuration shown with a multi-bar arm arrangement for a top-hung sash. It is listed in 201 or 304 stainless steel. The reinforced appearance is only one part of selection: the bar pack, square-groove rail, sash envelope and pivot path must be checked together to avoid a stay that fits the channel but cannot fold or close correctly. Read the Reinforced Arm Pack Count the visible links and note the depth of the folded stack shown by the product images. Plot that envelope inside the intended head profile and leave space for the arms to articulate without striking a return or seal. This is the characteristic review for reinforced top-hung stay hardware, rather than a generic comparison based only on track length. Coordinate the Top-Hung Pivot Path The lower sash edge moves outward while the head remains guided by the paired linkages. Mark the required projection, the opening limit…

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