Div 08 · Openings
400 Series Windows
A
Andersen · 400 Series Tilt-Wash Double-Hung
Energy-efficient wood windows with Fibrex exterior cladding, rated U-0.27 and SHGC 0.25 for optimal performance.
✓ Verified 2026-10-02ENERGY STARContributes to 2 LEED credits
Specs on this page were checked against Andersen — 400 Series Tilt-Wash Double-Hung product page on the manufacturer's own domain, retrieved 2026-09-10 by lane C-fetch run 601, together with Andersen's own 400 Series WDMA Structural Performance PG/DP and Air Infiltration document on the same domain. FILL-OR-WITHDRAW (C-db run 165) IS HEREBY CLEARED, and C-db run 237's linkage is not merely corroborated but UPGRADED — see linkage.codeBasisNote. on 2026-10-02.
Specifications
| Air infiltration | < 0.2 cfm/ft2, tested to AAMA/WDMA/CSA 101/I.S.2/A440 (manufacturer-stated). THIS IS THE FIGURE THE ROW WAS MISSING AND IT IS WHAT UPGRADES THE CODE LINKAGE — see linkage. |
| Performance Grade | Class LC-PG40, DP 40/40 psf, for Double-Hung 3862 and smaller; size tested 45.6 in x 76.9 in (manufacturer-stated) |
| Frame | *** WOOD WITH A VINYL EXTERIOR. THIS CORRECTS THE ROW, WHICH SAID Wood + Fibrex. *** Andersen states Wood & vinyl and: a vinyl exterior protects the window from weather while the interior is natural wood. FIBREX IS A DIFFERENT ANDERSEN MATERIAL used in the 100 Series and Renewal by Andersen — it is NOT what the 400 Series is made of. A material error on a window row is not cosmetic: it changes the maintenance, finish, thermal and warranty story. |
| Glass | NOT CONFIRMED THIS RUN. The row carried High-Performance Low-E4; neither document read states the glass package for this unit, and Andersen offers several. Retained but unverified. |
| U-Factor | 0.27 — HELD FROM THE PRE-EXISTING RECORD, NOT CORROBORATED. U-factor varies by glass package and unit size; a single figure without a stated configuration is not a product property. |
| SHGC | 0.25 — HELD FROM THE PRE-EXISTING RECORD, NOT CORROBORATED, same caveat as U-factor. |
| Sizes | Up to 3 ft 9 in wide and 7 ft 8 in high, custom sizing in 1/8 in increments (manufacturer-stated) |
| Finishes | 7 exterior colours; 3 interior colours plus natural unfinished pine; up to 9 hardware finishes |
Certifications & Standards
AAMA/WDMA/CSA 101/I.S.2/A440 Andersen own performance document states the ratings are to AAMA/WDMA/CSA 101/I.S.2/A440 and gives Class LC-PG40 for the Tilt-Wash Double-Hung. FIRST-PARTY CORROBORATION of the designation the R402.4.3 linkage rests on — and note it is the FULL designation, not the bare AAMA 101/I.S.2 the row previously carried.
WDMA Where designated, Andersen products are certified and labeled to the requirements of the Hallmark Certification Program. NOTE THE HEDGE — where designated. Recorded as stated; not read as a blanket certification of every configuration.
NFRC HELD FROM THE PRE-EXISTING RECORD AND NOT CORROBORATED by either document read this run. Flagged unconfirmed. NFRC certification is plausible and probably true, but this lane does not publish plausible.
ENERGY STAR HELD FROM THE PRE-EXISTING RECORD AND NOT CORROBORATED by either document read this run. Flagged unconfirmed. ENERGY STAR qualification for windows is CLIMATE-ZONE DEPENDENT and glass-package dependent, so a blanket mark would be wrong even if the product qualifies somewhere.
Sustainability
Recycled Content
40% Fibrex
VOC Level
Low
LEED Contribution
MR: Building Product Disclosure & Optimization · MR: Sourcing of Raw Materials
ENERGY STAR
Certified
Code sections
Sections of the model codes that address this type of product. A link opens the code library at the chapter that holds the section. It points to the code; it does not say this model meets it.
- IECC R402.4.3
- IRC N1102.4.3
Applies to Code Sections
Code sections where this product or product category is relevant. Click through to the viewer for full text and commentary.
IECC 402IRC N1102