Sash Lock and Keeper Sets | Marvin Glider Horizontal Sliding Windows, Minimum Order Pack Required consists of TWO (2) SETS of Sash Locks (2) and Keepers (2) in SATIN TAUPE - one (1) XO and (1) OX handing set. Also available in White or Bronze. See Drop Down Menu and Specify. XO TP ( Taupe ) 10817045 / OX (TP) 10817046 / Keeper (TP) 10817047 |  XO BZ ( Bronze ) 10817040 / OX (BZ)  10817041 / Keeper (BZ) 10817043 | XO WH ( White ) 10840013 / OX (WH) 10840024 / (WH) Keeper 10840014. Horizontal Sliding Windows: To determine whether you require an XO or OX window simply view the window from the exterior of your home. If you want the sliding panel to be the one on your left choose XO and if the operable is to be on the right choose OX. When ordering replacement parts for Marvin Wood / Clad Glider Windows.