Cert posture
NFRC certified
Casement, tilt-turn, fixed-picture, awning, arc-top, sliding, bifold, entry, swing, single-hung, double-hung carry NFRC ratings. Whole-unit U-factor and SHGC reported.
US Energy Star (bifold)
Cert ID: FXC-M-3
Bifold doors registered with US EPA Energy Star for the current cycle (valid through 2029-07-20). Climate zone eligibility per CA Energy Commission tables.
AAMA 2605 PVDF finish
20-year coating warranty. Long-term color hold through Central Valley and coastal-zone UV exposure.
STC 56 acoustic
Specifiable on configurations where Title 24 Acoustical Standards apply (mixed-use, hospitality, multifamily).
Product anchors
Sliding doors
NFRC + NAFS CW-PG50 up to 4500mm panel.
Bifold doors
Energy Star registered + NAFS CW-PG50.
Casement windows
Title 24 U-factor + SHGC ratings on quote.
Tilt-turn windows
European tilt-turn action; cold-climate inland-CA spec.
Fixed picture windows
Largest glass area, narrowest sightline.
Cert library
Full cert ID directory for permit submittals.
Why Crateworks
- NFRC ratings reported per CEC methodology. Cert PDFs ship with the project submittal so the energy consultant runs the compliance calc without a back-and-forth.
- Source-direct on a cert-equivalent aluminum spec. No dealer margin on the line item. Tariff cost itemized on the quote.
- Pricing locked from purchase order through delivery in writing. Holds through long CA build cycles where dealer-supplied product can re-price mid-project.
- Energy Star bifold FXC-M-3 carries through CA Energy Commission tables for the climate zones where Energy Star eligibility is the spec driver.
Common questions
- Are Crateworks windows Title 24 compliant?
- Yes on the certified configurations. NFRC ratings (U-factor, SHGC, VT) are reported per California Energy Commission methodology. The energy consultant uses the NFRC ratings to run the project Title 24 calculation; cert PDFs ship with the project submittal.
- Which configurations carry NFRC certification?
- Casement, tilt-turn, fixed-picture, awning, arc-top, sliding, bifold, entry, swing, single-hung, double-hung. Cert IDs are disclosed on every quote.
- What about California Title 24 acoustic requirements?
- STC 56 acoustic configurations are available on the window line, measured per ASTM E90. Specify acoustic at quote where mixed-use, hospitality, or multifamily acoustic requirements apply.
- Do you ship to California?
- Yes. Source-direct shipping to California. Cross-border tariff and import duty are itemized on the quote, not embedded in dealer margin.
Bigger project? Book a call.
Larger projects route to concierge. We coordinate the spec across categories so the schedule lands as one quote.