Above Range Microwave Venting Size Issue


  #1  
Old 07-09-12, 10:44 AM
A
Member
Thread Starter
Join Date: Jun 2008
Location: Virginia
Posts: 141
Upvotes: 0
Received 0 Upvotes on 0 Posts
Question Above Range Microwave Venting Size Issue

I am installing an above the range microwave to replace the existing one. The microwave vents to the back wall outside. The current hole for the old microwave vent fan is 3"x10" and is a little bit low for the new microwave. We need to move this up about an inch, but noticed that the instructions for the new microwave say to cut out a 4"x12" hole for the vent. However, all of the wall caps and other duct work seem to come 3"x10"... what's the proper way to set this up?

fyi... it looks like the microwave prior to the one we're removing used a 4"x12" hole since a bunch of spray insulation was used around the current 3"x10" space. The outside opening is 3"x10".

Thanks!
 
  #2  
Old 07-10-12, 07:51 AM
A
Member
Thread Starter
Join Date: Jun 2008
Location: Virginia
Posts: 141
Upvotes: 0
Received 0 Upvotes on 0 Posts
Unhappy

Well, how about this - does anyone know the best way to raise the existing exhaust duct work that is going through the wall to the outside? There aren't any studs nearby, so I'm wondering what to do about the space that will be below the duct and how to support it.

Lowering it isn't as trivial because you can just spray in some insulation above it.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: