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Galvanized steel safety chain with spring and mounting plates

Progressive Hardware Co., Inc.

Progressive Hardware Co., Inc. RDC-36 Safety Chain and Spring 34-36

SKU CH-T0KB-T0NDA

Heavy-duty galvanised steel safety chain and spring for exterior doors 34 to 36 inches wide, with mounting hardware included

  • Product typeSafety Chain
  • Galvanized steel chain resists corrosion on exterior doors
  • Extension spring absorbs wind force to protect hardware
  • Fits doors between 34 and 36 inches wide
  • Thru-bolts and self-drilling screws included for secure mounting
  • Para-rubber covering reduces noise and chain wear

Heavy-Duty Galvanized Safety Chain

The Progressive RDC-36 is a heavy-duty galvanized steel safety chain and spring kit designed for exterior doors measuring 34 to 36 inches wide. It provides a strong secondary lock that lets occupants open the door slightly while keeping it secured against forced entry.

Galvanized Steel Withstands Wind Load

A galvanized butt-welded chain with a para-rubber covering resists corrosion and reduces noise during use. The included galvanized extension spring, approximately 8 inches long, absorbs shock from strong gusts so the chain stays taut without snapping under sudden pressure.

Verify Door Width and Frame Material

Confirm the door slab is between 34 and 36 inches wide before ordering. The kit supplies self-drilling screws for steel frames; wood or composite frames will need suitable alternative fasteners not included in the package.

How it compares

Measured against everything we stock in Door Lock Sets & Deadbolts, at today’s prices. Recalculated every night.

Price $66.99
Pricier than about 54% of the 2,145 comparable items (median $55.99).

Specifications

Product
Product typeSafety Chain

Questions about this item

Does the galvanized steel chain or spring generate any noise or heat when the door stays open all day?

The chain and spring are passive metal parts with no moving electrical components, so they produce no heat and no operational noise while the door is held open.

What tools or door materials must I already have to install the included thru-bolts and self-drilling screws?

You need a drill or screwdriver for the self-drilling screws on a steel door frame, plus a wrench or socket for the thru-bolts on the door itself.

Will the 3" x 3" and 1-3/4" x 2-1/2" galvanized plates cover the holes left by my old 34-36 inch door chain hardware?

The two mounting plates are sized for the RDC-36 kit; they will cover existing holes only if the previous hardware used the same hole pattern and plate dimensions.

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