Assembled in the USA from foreign and domestic materials and custom computer CNC milled per each specific project requirement, Northlight products feature; superior engineering, quality, design, energy performance and pricing. Northlight has engineered the best quality sliding and bi-folding doors that exist in the market. We use superior quality T 5/6 aluminum with top quality PVDF finishes. Stainless steel hardware using the finest #304 & #316 Stainless steel components. All of our products come standard with 6 mm glass that is dual glazed with argon gas filled pockets; our competition has 4 mm glass standard. We offer tinting factory tinting at a very small up-charge on our products. All of our products feature energy efficient insulated energy efficient thermal profiles that are STANDARD and do not cost more money; a 40% savings over our competition. This refers to the insulation inside of the aluminum frame which is coined in the industry as; “Thermally Broken”. Meaning that the thermal energy transfer is broken by insulation. This results in superior energy performance.
The door pictured has the following energy performance ratings:
ENERGY PERFORMANCE RATINGS (using actual results from simulated modeling; actual performance rather than estimated)
U-Factor 0.27 US Metric 1.53
Solar Heat Gain Coefficient 0.24
Visible transmittance .68
Air leakage (less than 0.3 US and 1.5 Metric
Condensation Resistance 44