Storefront & Entrances
At Apogee Architectural Metals, we are shaping the future of building design with high-performance aluminum windows, curtainwall, storefront and entrance systems. As a leader in the industry, we deliver fully integrated solutions, from innovative design and precise engineering to advanced extrusion, finishing, fabrication and assembly.
Backed by our renowned Tubelite, EFCO, and Wausau Window brands, we serve a wide range of commercial and institutional projects across the U.S. and Canada. We are known for our dependable service, robust engineering and industry-leading quality. As part of Apogee Enterprises, our evolution reflects a commitment to continuous improvement, aligning our product offerings to better serve our customers and meet the needs of an ever-changing marketplace.
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Product Recommendations
Developed to be IBC 2021 & IECC 2021 Compliant for Climate Zones 5 & 6 and MA Stretch Energy Code
The following product recommendations have been developed to assist owners, architects and contractors in the selection and specification of Apogee Architectural Metals commercial fenestration solutions that meet the requirements of the IBC 2021, IECC 2021 for the Northeast (i.e., Climate Zones 5 & 6) and MA Stretch Energy Code. 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 Apogee Architectural Metals. Contact PACE Representatives to develop a custom fenestration basis of design (BOD) package to meet your project specific performance requirements and design conditions.
| Series | Depth | Sightline | Thermal Performance* (center of glass U-Factor) | Impact | Ballistic | Blast | Notes | ||||
| 0.30 | 0.24 | 0.20 | 0.12 | 0.075 | |||||||
| 403 | 4 1/2" | 2" | 0.42 | 0.37 | 0.34 | NA | <0.32 | No | No | No | Center set glazing |
| 403X | 4 1/2" | 2" | 0.36 | 0.31 | 0.28 | NA | <0.19 | No | No | No | Center set glazing |
| 406 | 6 1/2" | 2" | 0.46 | 0.41 | 0.38 | NA | <0.38 | No | No | No | Center set glazing |
| 406X | 6 1/2" | 2" | 0.38 | 0.33 | 0.30 | NA | <0.21 | No | No | No | Center set glazing |
| 433 | 4 1/2" | 2" | 0.40 | 0.35 | 0.32 | NA | <0.23 | No | No | No | Multi-plane glazing |
| 526 | 5" | 2 1/2" | 0.44 | 0.39 | 0.36 | NA | <0.36 | Yes | Yes | Yes | Thermal impact |
| WV-430 | 3 1/4" | 7/8" | 0.42 | 0.38 | 0.35 | NA | <0.28 | No | No | No | Project-out vent |
| DuraStile** | 2" | 3 1/2", 5", 6" | 0.80 | 0.78 | 0.76 | NA | <0.76 | Yes | Yes | Yes | Swing door |
| ThermaStile** | 2" | 2 3/8", 3 1/2", 5" | 0.61 | 0.58 | 0.56 | NA | <0.56 | No | No | No | Swing door |
| TerraStile** | 2 1/4" | 2" | 0.49 | 0.45 | 0.43 | NA | <0.43 | Yes | No | No | Sliding door |
* Based on NFRC 100 gateway size and configuration (78 3/4" x 78 3/4" fixed or 39 3/8" x 78 3/4" door) Center of Glass (COG) Summary: | |||||||||||
Industry Insights
Code Requirements: (per IECC 2021 & MA Stretch Energy Code)
The prescriptive thermal performance requirements (i.e., U-Factor) for vertical fenestration systems are indicated in Table C402.4 of the IECC 2021. 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 | MA Stretch Code |
| Vertical Fenestration | |||
| U-Factor | |||
| Fixed Fenestration | 0.36 | 0.34 | 0.30 |
| Operable Fenestration | 0.45 | 0.42 | 0.32 |
| Glazed Wall System | NA | NA | 0.25 |
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 2021 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 - Fenestration
National Fenestration Rating Council