I'm wanting to replace the glass in our aluminium sliding patio doors with Optilam Phon / Vlam Hush (looks like the product has recently changed name). Each door has 2 panels about 1900 x 900 each and I want 6.5mm hush. I've had 2 quotes,the lowest is $830 for each door (ie for 2 1900x 900 panels) supplied and fitted. The highest is $1200. The 3rd quote I received was from a large national glass chain who didn't seem interested in hush and only wanted to put in 6mm laminated, thier...

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