Andersen TW34210 (Lower Sash) White Exterior and White Interior High Performance LowE4 Glass - No Grille Grommets Color:White Interior / White Exterior Classic style covers - (1999

Classic style covers - (1999 - Present):

2010 to Present

Andersen TW3046 (Lower Sash) White Exterior and Natural Pine Interior High Performance LowE4 Tempered Glass (1992 to May 2010) Works with 400 Series Tilt-Wash Double-Hung Windows manufactured from 1992 to May 24

Andersen 20210 Narroline Double Hung Upper Sash Terratone Exterior with Terratone Interior Works with Andersen Narroline Double Hung 1968 to 2012

Note: For easy "How to Install Instructions" view the (Size Guide & Instructions) section

Andersen TW34210 (Lower Sash) White Exterior and White Interior High Performance LowE4 Glass - No Grille Grommets Color:White Interior / White Exterior Classic style covers - (1999Andersen TW34210 (Lower Sash) White Exterior and White Interior High Performance LowE4 Glass No Grille Grommets This Sash has no grille grommets, any interior grilles for this window will need to have the chisel style plungers. This sash has new High Performance Low E4 glass and replaces previous versions of Low E glass. Low E4 glass showed up to 25% in savings on cooling bills and 10% on heating bills over ordinary dual pane glass. Protects interior