Windows

EFCO Corporation is a leading manufacturer of architectural aluminum window, curtain wall, storefront and entrance systems for commercial architectural applications. Headquartered in Monett, Missouri, our mission is to be the most trusted supplier in commercial architecture.

With the dedication of the EFCO team and backed by the support of Pella Corporation, an industry leader in technology, innovation and customer satisfaction, you can count on EFCO to provide the best fenestration solutions and quality service for commercial construction. Today, and in the future.

Click here to view EFCO's Corporate Overview video.

Hung/Fixed

Projected/Fixed

Sliding/Fixed

Subframes

 Panning/Trim 

 EFCO Product Recommendations

Developed to be IBC 2015 & IECC 2015 Compliant for Climate Zones 5 & 6

The following EFCO window, storefront and curtain wall recommendations have been developed to assist owners, architects and contractors in the selection and specification of EFCO commercial fenestration solutions that meet the requirements of the IBC 2015, IECC 2015 for the Northeast.  (i.e., Climate Zones 5 & 6)  Appropriate use and application of these recommendations will vary based on performance considerations and environmental conditions unique to each project and, therefore, do not represent the final opinion or recommendation of PACE Representatives or EFCO.  Contact PACE Representatives to develop a custom fenestration basis of design (BOD) package to meet your project specific performance requirements and design conditions.

SeriesDepthSightlineThermal Performance*
(center of glass U-Factor)
 Impact Ballistic  Blast  Notes
0.300.240.20
Fixed
 321X/321G 3 1/4"2 9/16"0.400.350.32YesNoNo Applied grid available.
 325X/325G 3 1/4"2 1/8"0.400.350.32NoNoNo Applied grid available.
FX323 1/4"1 1/4"0.380.330.30NoNoNo 
450X/450G4 1/2"2 1/8"0.38 0.340.31NoNoNoAccomodates triple glazing
Projected
 321X/321G 3 1/4"3 5/16"0.480.450.42YesNoNo Applied grid available.
 325X/325G 3 1/4"3 5/16"0.480.450.42NoNoNo Applied grid available.
450X/450G4 1/2"3 3/8"0.47 0.44 0.41NoNoNoAccomodates triple glazing.
PX323 1/4"3 5/16"0.400.360.34NoNoNo 
WV-4103 1/4" 1 1/16"0.390.320.28NoNoNoProject-out vent for storefront & curtain wall.
WV-4303 1/4"7/8" 0.420.380.35NoNoNoProject-out vent for storefront & curtain wall.
Hung
HX323 1/4"4 3/16"0.420.380.35NoNoNo 
HX454 1/2"4 15/16"0.430.400.38NoNoNo Applied grid available.
663/663G3 7/8"3 5/8"0.520.480.46YesNoYes Applied grid available.
Sliding
SX454 1/2"4 1/2"0.380.340.31NoNoNoThermal performance based on premium model. 
## = Series and glazing combination does not comply with IECC 2015 for Climate Zone 6
## = Series and glazing combination does not comply with IECC 2015 for Climate Zones 5 or 6
* Based on NFRC 100 gateway size and configuration for operation shown.

















Industry Insights

Code Requirements: (per IECC 2015)

The prescriptive thermal performance requirements (i.e., U-Factor) for vertical fenestration systems are indicated in Table C402.4 of the IECC 2015.  Frame material is no longer taken into account and the requirement is based on your climate zone and fenestration type.  (e.g., Fixed, Operable or Entrance Doors)

Climate Zone  5 and Marine 4              6           
Vertical Fenestration
U-Factor
Fixed Fenestration0.380.36
Operable Fenestration0.450.43

Prescriptive compliance is only allowed with a vertical fenestration area less than or equal to 30% of the gross above-grade wall area.  Prescriptive compliance is allowed up to not more than 40% of the gross above-grade wall area if certain minimum floor areas are in the daylight zone and daylight responsive controls are incorporated.

U-Factors of fenestration systems (e.g., windows) shall be determined by an accredited, independant laboratory in accordance with either NFRC 100 or ANSI/DASMA 105 AND labeled by the manufacturer.  Products lacking a U-Factor label shall be assigned a default U-Factor per IECC 2015 Tables C303.1.3(1)-(3).

The air leakage of window assemblies shall be a maximum of 0.20 CFM/FT2 per AAMA/WDMA/CSA101/I.S.2/A440 or NFRC 400.  The maximum rate of 0.30 CFM/FT2 shall be permitted when tested in accordance with AAMA/WDMA/CSA101/I.S.2/A440 at 6.24 psf (300Pa).

 

Additional Resources:

Whole Building Design Guide - Windows

National Fenestration Rating Council

Wind Speed Calculator