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400 Series Curtainwall
Snap-on covers, available in a wide range of colors, allow for different finishes on interior and exterior exposed surfaces. Silicone glazed verticals are available for a seamless appearance.
400 Screw Spline Curtainwall 400SS Curtainwall has a 21⁄2” sight-line and is available in variable deptsh from 5 7/8” to 13 1⁄4” through face cover / backmember combinations. It is recommended for use on low to medium rise structures.
400 IG Curtainwall
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Designed for low- and mid-rise applications, the durable framework of the 400 Series provides exceptional structural performance reducing the need for steel reinforcing. This system has a sightline of 2-1/2” and the strength of variable-depth backmembers from 4” to 7”. An exterior screw-applied pressure bar secures the glass.
Wausau 400SS Screw Spline Curtainwall is an exterior glazed, thermally improved pressure wall system. This gasket glazed, weeped system will accept infill material up to 1” thick, positioned at the frame exterior for a minimum of metal exposure. A screw applied pressure plate secures the infill material and snap fits with a cover plate to conceal fasteners and allow for two color installations. Open-back jambs and 2-piece intermediate verticals allow screw spline joints. This reduces the need for shear blocks, fabrication time and installation labor costs. 
Wausau 400 Series I.G. (Inset Glaze) Curtainwall Framing for low and medium rise applications has been redesigned for installation labor savings and design flexibility. Offset glass pockets and removable glass stops on the new 400 Series allow glazing or re-glazing from both the exterior and interior of the building. Broken lites can be replaced without removing the vertical pressure plates or snap covers. The new roll-over horizontal member permits erection of all the verticals first, to reduce installation time and cost. Open back head and jamb members provide economical alternatives to the previous hollow tube perimeters.