Deltana TC82 Transom Chain 12" Long

A transom chain is the limiter that stops a bottom-hinged (hopper) window from swinging open past a set point. The Deltana TC82 is a 12 inch steel chain that fixes one end to the sash and one to the frame, so the sash opens to the length of the chain and no further. It also gets used on small doors, chests and fold-down desk fronts for the same reason, holding the leaf at a controlled angle instead of letting it drop.

Twelve inches of chain, so the sash travels until the chain pulls taut at that length. Mount both plates closer together than 12 inches and you get less swing; the chain sets the maximum, not the minimum. If you need a longer or shorter throw on the opening, the chain length is the spec to change, since the TC82 is a fixed 12 inch chain.

Mounting hardware is included. Each TC82 ships in an individual poly bag with the hardware, and it is sold by the each, so one bag covers one opening. On a multi-unit job that means one order line per window rather than buying fasteners separately.

Deltana rates the TC82 for commercial use, and the chain and its substrate are steel rather than a cast pot metal, which is what carries the load when a sash swings out to the stop. Property managers standardizing hopper windows or transoms across a building can run the same 12 inch chain on every opening and keep the finish consistent.

A chain limits travel, it does not hold a sash at a chosen position. The TC82 stops the window at the end of its 12 inch run and takes the load there; between closed and fully open the sash is free. If you need the window parked at an intermediate angle and held there, you want a friction stay or an operator arm, not a chain. For a hopper that simply must not fall open past a safe point, the chain is the right part.

Three: brushed nickel, polished brass, and paint black. Brushed nickel and polished brass are the ones that tend to match existing window hardware in a residence or a hotel corridor; paint black is the pick when the chain sits against dark sash or you want it to disappear. All three are the same 12 inch steel chain underneath.

Yes, that is a stated application. Deltana lists the transom chain for small doors, boxes and fold-down desks as well as bottom-hinged windows. The lid drops until the 12 inch chain catches it, which is what keeps a writing surface level and stops a box lid tearing its hinges backward.