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**The Rocknrod** · 03-11-2021, 02:32 PM

It's up to you I guess. What issues are you referring to? You can still use a product like Flatline Barriers Insulation and Sound Dampening behind the AC unit can't you?

03-11-2021, 02:32 PM	#2
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: Firewall Insulation with Factory A/C It's up to you I guess. What issues are you referring to? You can still use a product like Flatline Barriers Insulation and Sound Dampening behind the AC unit can't you? __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?