Certifications & Testing
Review our documented product authorizations, conformity certificate and Intertek test reports.
证书与测试文件仅代表文件中明确的产品系列、样品和适用范围；具体项目请联系工程团队确认配置、性能值和市场要求。
NFRC Product Authorizations
Three 82 mm vinyl product types carry NFRC product certificate authorizations. The certificates list authorized ratings as U-Factor, SHGC, VT and CR, with NFRC 102 test method documentation.
82mm Vinyl Single Hung Window
CPD DUW-M-3 · VSSH · expires 07/09/2030.
82mm Vinyl Fixed Window
CPD DUW-M-1 · FIXD · expires 07/15/2030.
82mm Vinyl Sliding Window
CPD DUW-M-2 · HSOX · expires 07/03/2030.
EU Conformity & Intertek Test Reports
The DURABLE/82 SERIES TT PVC window has a Certificate of Conformity under AVCP system 4 to EN 14351-1:2006+A2:2016. D92S and D110S awning + fixed windows have Intertek reports to AS/NZS 4420.1-2016 and AS 2047-2014 (Amdt 2-2017).
DURABLE 82 Series TT PVC Window
Certificate Nr. SC-PSC-4-2025-12-21 · expires 08/12/2028.
D92S Awning + Fixed Window
Intertek 251125002SHF-001 · 92 mm frame · issued 2026-01-04.
D110S Awning + Fixed Window
Intertek 251125002SHF-002 · 110 mm frame · issued 2026-01-04.
Authorization & Historical Reference
The current authorization letter covers Kaifeng Langtu International Trade Co., Ltd. for online display and sales of the full system door and window range from 06/10/2026 to 06/09/2027. The PHI component certificate shown below is archived and was valid through 12/31/2024.
Online Sales Authorization 2026–2027
Durable authorizes Kaifeng Langtu International Trade Co., Ltd. for overseas online display and sales.
Archived PHI Component Certificate
PVC-U alloy-resin passive window component certificate; historical reference only.
Project Compliance Support
Send your opening sizes, glazing specification and destination market. Our team will confirm the applicable documents for your project.
