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4.5 (123)

Marks Knob Assembly Kit For K21AC/3 Mortise Lock For Security Door & Storm Door

Name: Countryside Locks Marks Knob Assembly Kit For K21AC/3 Mortise Lock For Security Door & Storm Door - Marks Knob Assembly Kit For K21AC/3 Mortise Lock For Security Door & Storm Door
Brand: Countryside Locks
SKU: 49150881412
Price: 59.99 USD
Availability: InStock
Rating: 4.5714 (12 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$59.99$79.99

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Quantity

Color

Black

Quantity

Exterior / Interior knob/rose kit for Marks Ornamental Iron Mortise Lockset 21AC/3

1" - 1-3/4" thick doors
Bright brass finish
Interior and Exterior knob included.

Reviews

4.6

14 ratings

Great product, exactly what I needed / ordered. Had to review intructions on Youtube, thankfully I found the exact mortise lock installation video that I could refer to in exchanging the handles.

G. · March 21, 2026