We had Oknalux double-glazed windows installed with sound reduction glazing as we were having problems with someone on our street revving the engine of their Harley at crazy hours and waking up our 2 year old toddler! After having these windows installed, the intensity of the sound is greatly reduced and our toddler now sleeps through it. The thermal insulation is an added bonus as this summer, our toddler’s room was kept cool, even on 42 C days. Would highly recommend this product and not to mention a great team who’ll help you from the initial quote to final installation.