400SS Screw Spline Curtainwall

400 SS

Tubelite’s 400SS thermally broken curtainwall product has been designed to reduce fabrication and installation labor while meeting or exceeding today’s stringent energy codes. The 400SS Screw Spline Curtainwall has a 2-1/2″ sight line, with system depths from 6” to 10” and optional polyamide pressure plates. This screw spline system can be pre-assembled, pre-sealed (i.e. water dams) and pre-glazed in the shop, or stick fabricated for field glazing.

Dependable Performance
The thermal isolator and thick gasketing provide excellent U-Factors and CRF when using high-performance insulated glass. Glass is positioned to the system exterior for enhanced resistance to rainwater. Seven anodized finishes and 20 standard paint colors are available on this framing system to complement any project with warranteed protection, as well as street appeal. The 400SS also accepts Tubelite’s Operable Windows, Therml=Block® Doors, Maxblock® Sunshades and aLuminate® light shelves.

400SS Screw Spline Curtainwall is recommended for use on medium- and low-rise applications. The 1/2” bite securely grips insulated glass or panels of 1″ thickness. Infill thicknesses from 1/8 inch to 1-5/16 inches also can be accommodated. An improved horizontal member allows for expansion/contraction clearances to minimize splice requirements.

Thorough testing by an independent laboratory ensures the 400SS is the highest quality curtainwall framing product the industry has to offer.

System Features

      • Standard 6″ (152.4mm) 7-1/2″ and 10″ depth systems have a 2-1/2″ (63.5mm) sight line
      • Outside glazed pressure-plate system available in captured and structural glazed configurations
      • Standard infill option 1″ (25.4mm), other infills available
      • Thermally Broken using a continuous 1/4” EPDM Isolator
      • Concealed screw spline fastener joinery creates smooth, monolithic appearance
      • Two-piece expansion vertical & horizontal members
      • Can be shop-fabricated and shop-glazed for labor savings
      • Silicone compatible glazing materials for long-lasting seals
      • Captured & SSG inside and outside corners available

    Optional Features

      • Steel reinforcing available
      • Optional deep profile and bull nose covers available
      • Captured & SSG verticals & horizontals available
      • Polyamide pressure plates available
      • Easily integrates with Tubelite’s, Entrances, 3700 and Phantom 5000 Insert Vents, Maxblock Sunshades, and aLuminate Light Shelves
      • Deep and heavy-weight mullions available

    Product Applications

      • Ideal for low to mid-rise applications where high performance is desired



    The Yard – Shakespeare Theater
    Chicago, IL


    Embry Riddle
    Daytona Beach, FL


    GR Ballet
    Grand Rapids, MI


    Bethke Elementary School
    Timnath, CO


    Face Width:Overall Depths:Glass:Air Infiltration:Water Infiltration:Structural:U-Value:CRFF:Acoustic:

    400SS Screw Spline Curtainwall
    Application: Low and mid-rise commercial buildings including retail, office, healthcare, schools, etc.
    Description: 2-1/2” x (6”, 7-1/2″, and 10”) field or shop glazed, screw spline construction curtainwall.
    2-1/2″ 6″, 7-1/2″
    & 10″
    1″ std
    (1/4″ to
    0.06 CFM/Ft2
    @ 6.24 PSF
    15 PSF – Static
    15 PSF – Dynamic
    40 PSF
    Design Load
    60 PSF
    U-Value Table CRF-Value 32 STC
    27 OITC
    400SS Screw Spline Curtainwall
    Application: Low and mid-rise commercial buildings including retail, office, healthcare, schools, etc.
    Description: 2-1/2″ x (6″, 7-1/2″, and 10″) field or shop glazed, screw spline construction curtainwall.
    Face Width: 2-1/2″
    Overall Depths: 6″, 7-1/2″ & 10″
    Glass 1″ std (1/4″ to 1-5/16″)
    Air Infiltration: 0.06 CFM/Ft2 @ 6.24 PSF
    Water Infiltration: 15 PSF – Static; 15 PSF – Dynamic
    Structural: 40 PSF Design Load 60 PSF Overload
    U-Value: U-Value Table
    CRFF: 68 – Aluminum PP
    77 – Polyamide PP
    Acoustic: 32 STC
    27 OITC
    *See Tubelite’s Guide Specifications for complete product performance and test descriptions.