Performance

All Origin products are built to last, and thoroughly tested, which is why we offer an industry-leading guarantee of up to 20-years on parts.

OW70 has been designed for maxmised thermal efficiency, and has been engineered with a 32mm polyamide thermal break, along with a bespoke cavity gasket in the internal chamber between the sash and frame as standard.

Exceptionally slim frames, maximum viable glass coverage and airtight seals all contribute to ensuring that OW70 can meet a highly efficient 1.2 U-Value in both short-leg and long-leg variations.

Product Performance

Building Regulations*
New Build Limiting Value	1.6 W/m²K
Replacements	1.4 W/m²K
Energy Rating	B or better

Performance
PAS 24	2022
Secured By Design	Yes
Air Permeability	Class 4, 600 Pa
Energy Rating	A / B
Wind Loading	Class A5, 2000 Pa
Water Tightness	Class 9A, 600 Pa

Testing

BS 6375 Parts 1, 2 and 3

Passed 50,000 lead sash cycles and 10,000 full cycles, equating to 25-years of use.