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Delta Leland 9178-AR-DST vs Grohe Concetto 32665001

A sourced, side-by-side comparison. Grohe Concetto 32665001 is cheaper at $449. Every spec and price links to its source.

Which is better: the Delta Leland 9178-AR-DST or Grohe Concetto 32665001?

On the specs we track, they're closely matched. The Grohe Concetto 32665001 is the cheaper at $449.

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Full spec sheet

marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.

Spec Delta Leland 9178-AR-DST Grohe Concetto 32665001
US price $585 $449
BrandDeltaGrohe
Released
Flow rate gpm 1.8 1.75
Spout height (in)
Spout reach (in) 8.63
Spray modes 2
Activation type manual manual
Handle type single-handle single-handle
Mounting holes 1 1
Valve type DIAMOND Seal Valve ceramic-disc
Body material brass
Finish options count 6
Swivel degrees 360 360
Lifetime warranty Yes Yes

Sources — Delta Leland 9178-AR-DST: deltafaucet.com (verified 2026-07-11). Grohe Concetto 32665001: grohe.us (verified 2026-07-11).

What's the difference between the Delta Leland 9178-AR-DST and Grohe Concetto 32665001?

Where the two actually differ on the specs we track (2 of 12). Matching specs are omitted.

  • Flow rate gpm: Delta Leland 9178-AR-DST 1.8 vs Grohe Concetto 32665001 1.75
  • Valve type: Delta Leland 9178-AR-DST DIAMOND Seal Valve vs Grohe Concetto 32665001 ceramic-disc

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