Genuine Allett Lower (bottom) blade — part F016103797. A direct-replacement bottom blade manufactured to Allett specification for 20" cylinder mowers, intended to restore correct cutting geometry and cylinder-to-bedknife clearance so your reel mower cuts clean and rolls smoothly.

What it is: the F016103797 is the lower/bed knife for 20‑inch, 10‑blade cylinder cassette machines (cross-referenced with Allett part references such as F016A58296/F01658185). It’s supplied as the single bottom blade unit that mates to the 10‑blade cassette and the mower bed – a like‑for‑like Allett replacement.

Example fitment (models where this part is listed as a direct replacement): Allett 10‑blade cassette 20" machines, Allett Kensington 20K (model code 3616 C09 A71), and various Balmoral/Bosch 20S / 20SE cylinder mower variants that share the same lower blade family. Use these model references to confirm fit to your mower.

Why choose the original Allett part: keeps factory blade profile and clearances, reduces setup time at reassembly, and maintains the finish and stripe quality the mower was designed to deliver.

(If you need the blade for a specific machine, matching the mower model/code against the examples above will confirm compatibility.)