Marvin Casemaster Dual Arm Roto Gear Coastal Stainless Steel Operator

Casemaster Dual Arm Roto−Gear | Coastal Stainless Steel Operators | Old Style - Operator Only ( No Handle or Cover Included ) CN 48 through CN 56 Width Casement Window Unit Operators For Sash with Daylight Opening -  18 1/2" through 22 1/2" Wide - SEE DROP DOWN FOR HANDING.

This is the Standard "B" Length Arm at 4 7/16"

NOTE IF YOU NEED THE SHORTER "B" LENGTH ARMS - You Must Specify  2 7/8" or 3 3/4"  "B" Length In "comment section" at checkout.