All Categories > Window Weatherstrips > Window Weatherstrip - Double Hung Windows - Series No. 30 - Heavy Duty Type      Printable Page     Email This Page     Save To Favorites Window Weatherstrip - Double Hung Windows - Series No. 30 - Heavy Duty Type Ideal for use in schools, office buildings, hospitals and institutions where ruggedness is a prime requisite. Features: a heavy No. 16 gauge channel is screwed to the pulley stiles and engages a channel type lining on the sash to provide an efficient and extremely durable installation. How to Specify: all double hung windows shall be equipped with Metal Weather Strips, Series No. 30 equipment with heavy duty No. .... gauge sill member, all zinc (or cold rolled bronze) in accordance with manufacturer’s standards. Note: specify gauge of sill member desired. No. 12 gauge sill is required to meet government specifications Stock sizes; 32",36",42",48",60",64",72",86",96" plus 1/2"