All Origin products are built to last, and thorough tested, which is why we offer an industry-leading guarantee of up to 20-years on parts.
OW-70 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 OW-70 can meet a highly efficient 1.2 U-Value in both short-leg and long-leg variations.