Maximum Deck Thickness is 1.25 inches
From the Manufacturer
Ideal for heavy use in a commercial setting, the Triton shelf-back lavatory faucet features Valvet valves and ceramic disc valves that exceed industry standards for longevity two times. This model includes a spout, standard handles, a pop-up drain with a 1-1/4-inch tailpiece and an aerator.
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Two-handle, shelf-back lavatory faucet
KOHLER ceramic disc valves exceed industry longevity standards two times for a lifetime of durable performance
Pop-up drain.Dimensions(inches):1-1/4 x 5-1/2