Rose sizes for L Series

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Typically for a 1-3/4" door you would use a 1-1/4" cylinder.  Use the Table in the Pricebook for a reference:  
The diameter of the ND rose is 3 7/16".
The diameter of the standard W lock rose is 3-1/2" and the small rose (SR) has a diameter of 2-9/16".
Maximum nominal (overall) single door sizes are as follows: L-Series (Laminated Door) 20 Gage = 3’ 0” wide X  8’ 0” high 18 Gage = 4’ 0” wide X 10’ 0” high 16 Gage = 4’ 0” wide X 10...
The rose measures 3-7/16" diameter.