Thanks for your interest in Pella® Impervia® Products. Click on the link(s) below to download the correct Size Charts. You'll need Adobe® Acrobat® Reader to read it.   Fixed Window Size Chart (502 KB) Approx. 1 min. 20 sec. over 56K modem.   Single-Hung Window Size Chart (957 KB) Approx. 2 min. 15 sec. over 56K modem.   Double-Hung Window Size Chart (1,139 KB) Approx. 2 min. 50 sec. over 56K modem.   Sliding Window Size Chart (964 KB) Approx. 2 min. 20 sec. over 56K modem.   Sliding Door Size Chart (229 KB) Approx. 35 sec. over 56K modem.   Special Shapes Window Size Chart (187 KB) Approx. 30 sec. over 56K modem.     To view PDF files, you must use Adobe's Acrobat Reader, which is available for Windows, Macintosh, and UNIX platforms and may be downloaded for free. The latest version of Adobe Acrobat is 5.0, which works as plug in for Netscape Version 2.0 or later and Microsoft Internet Explorer 3.0 or later. ©2005 Pella Corporation. All Rights Reserved Privacy Policy.