Good advice Nsgarch. I have that no my door, and it works wonders. Sound really "leaks" through the gaps.
Two things. On my unit, you must router a slot in the bottom of the door for the "guillotine" to fit into when not extended. Also, I don't think mine would extend as much as one inch. It may be necessary to also install a threshold for the guillotine to push down against.
Two things. On my unit, you must router a slot in the bottom of the door for the "guillotine" to fit into when not extended. Also, I don't think mine would extend as much as one inch. It may be necessary to also install a threshold for the guillotine to push down against.