studio glass window

[Falopo]

quick question. i need ot get some glass for a studio window, maybe 3 by 3. Do i need to get soundproof glass for it to be soundproof, or just two thick pieces of glass installed correctly? and what thickness should the glass be? may be a stupid question but ive never done this before. thanks

 

[sheppard]

where are you located?i have some 3x3 2 ply 1/4 inch glass.

 

[Falopo]

delray beach, fl. im not sure if thats close but i'll post the exact measurments later.