Performance
Figures...

Weather & Testing

Exceptionally slim frames, maximum viable glass coverage and airtight seals all contribute to ensuring that OB-36⁺ can meet a highly efficient 0.78 U-Value.

Building Regulation Requirements*
New Build Limiting Value	1.6 W/m²K
Replacements	1.4 W/m²K
Energy Rating	C or better

*All doors must conform to these requirements

Testing

PAS 24

BS 6375 Parts 1, 2 and 3

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

Weather Rating 2,500mm>
Air Permeability	Class 4, 600pa
Resistance to Wind Load*	Class A3, 1,200pa
Water Tightness	Class 9A

Glazing	U-Value
1.2 Centre Pane	1.4 W/m²K
1.1 Centre Pane	1.3 W/m²K
0.9 Centre Pane	1.1 W/m²K
0.6 Centre Pane	0.85 W/m²K
0.5 Centre Pane	0.78 W/m²K

*Dependent on the sash width. Please see OSS for more information.

Thermals & Sizes

Sash Sizes	Width	Height
Min. Sash Size	600mm	1,850mm
Max. Sash Size	1,000mm*	2,376mm

* Maximum sash weight - 76kg (this is dependent on the lateral loading)

Set Sizes
Min. Set Height	1,974mm
Max. Set Height	2,500mm
Min. Set Width	702mm
Max. Set Width	6,000mm

NOTE: Aluminium as a material is prone to thermal expansion and contraction. Therefore it is a physical change that we both expect with our profiles, and incorporate into our product design and tolerances. Maximum steel deflection - 3mm.