3 1/4″ 1600H Series Historic Double-Hung with Integral Face Flange – CAD Drawings CAD DRAWINGS Configuration Description DWG PDF 1600H Series Historic Double-Hung with Integral Face Flange glmdev2025-07-18T10:16:54-04:00 Share this project on any of these platforms. FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestEmail