ForceFront Blast® 2-1/2″ Curtainwall

ForceFront Blast: Entrances – Wide Stile | Storefront- E/T34000 | Curtainwall – 2-1/2″force-blast-curtainwall-header

Tubelite ForceFront Blast Curtainwall is designed for compliance with ASTM, GSA ISC and DoD requirements for charge weight and standoff. This blast resistant shear-clip framing is designed to be glazed with 1-1/16″ laminated glass positioned to the front of the frame. The system design was qualified using TE&C analysis, and blast protocols ASTM F2248 and UFC 4-101-0. Forcefront Monumental Stile Entrance Doors compliment the system providing a complete blast resistant wall system that’s easy to fabricate and install.

A complete evaluation performed by a Professional Engineer is required for each project.


  • Arena and shock tube testing performed
  • ASTM F 1642-04, UFC 4-010-01, GSA-TS01-2003 protocols
  • Glass qualified: SG
  • Testing results:
    • Exceeds 6 psi – 42 psi-msec
    • Charge weight of 550 lbs. at 153 ft. stand-off
  • ForceFront 400CW has been analyzed in accordance with UFC 4-101-01 Oct. 2013 and ASTM F2248 Blast resistance criteria using calculation and SBEDS software, and has been found to comply with 148 ft standoff Charge Weight I, and 82 ft Charge Weight II in illustrated configurations. Each project must be analyzed separately for compliance based on project-specific charges, standoffs, product sizes, and substrates, with shop drawings prepared for each project.

ForceFront Storm Curtainwall can help with the following LEED points:

  • MR 4.1 & 4.2 Recycled Content
  • MR 5.1 & 5.2 Regional Materials
  • EQ 8.1 & 8.2 Daylight & Views

ForceFront Blast Product Specifications
Application: Face Width: Overall Depths: Glass
Air Infiltration: Water Infiltration: Static/Dynamic
FFS-CW CR*: FFS-CW U Value*: Sound Transmission:
Low-Rise storefront, center set glass, outside glazed 2-1/2″ 7-1/2″ 1-1/16″ 0.06 CFM/Ft.2 @ 6.24 PSF 15 PSF Dynamic & Static 15 PSF 64 – OS 0.24 – OS 36 STC
ForceFront Blast Product Specifications
Application: Low-Rise storefront, center set glass, inside/outside glazed
Face Width: 2-1/2″
Overall Depths: 7-1/2″
Glass Thickness: 1-1/16″
Air Infiltration: 0.06 CFM/Ft.2 @ 6.24 PSF
Water Infiltration: 15 PSF Dynamic & Static
Static/Dynamic Water: 15 PSF
FFS-CW CR*: 64 – OS
FFS-CW U Value*: 0.24 – OS
Sound Transmission: 36 STC, 32 OITC
* See Tubelite’s Test Reports for mock up sizes and test conditions.