Q1: What certifications do these UPVC double hung windows carry?
Our UPVC double hung windows are fully certified with AAMA standards, Tilt 24 / NFRC Certification, and meet the N6 CLASS based on AS2047 standard certification.
Q2: What glass options can I choose for these windows?
We offer double toughened glazing (e.g., 5mm+12A+5mm, Low-E, or tinted options), single toughened glazing (from 3mm up to 21mm), and laminated glazing options for superior thermal and acoustic performance.
Q3: Which hardware brands are integrated into the window design?
You can select hardware components from premium German brands (Roto, Siegenia, Geze), Australian brands (Doric), or high-tier Chinese brands (Kinlong, Zhenjiang).
Q4: How well do these windows perform against noise and harsh weather?
The windows deliver impressive performance ratings: sound insulation of RW ≥ 30 dB, wind pressure resistance of up to 4500 Pa, and water resistance up to 450 mm.
Q5: What is the warranty period for this product?
All our AAMA standard UPVC double hung windows come backed with a comprehensive 10-year warranty.
Q6: What packaging is used to ensure safe delivery?
Windows are securely packed using iron pallets, protective air bubble film, and tough plastic wrap to prevent damage during transit. Custom packaging requests are also supported.
Primeval Doors
