DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > General Home Improvement Discussion > Over-the-Range Microwave Venting Help

Thread Tools Search this Thread Display Modes
Old 08-16-2011, 11:11 AM  
Junior Member
Join Date: Apr 2011
Location: Philadelphia, PA
Posts: 3
Default Over-the-Range Microwave Venting Help

Hello - I am installing a new over-the-range microwave oven and need help on installing the soffit for venting.

The microwave will be installed on an exterior wall so I plan on having it vent out straight through the wall (I checked my model # and the blower direction allows this to happen).

My question is, how do I properly vent it outside? I have been looking for kits at Lowes/ HD and cannot find anything. The closest thing is a Dryer Vent Kit, which I do not think will work.

My wall is comprised of 1/2" drywall, 2x4 framing (Roll insulation in between studs), 3/4" sheating, and then the exterior is stucco.

Any assistance in how to properly do this is greatly appreciated.

kappadoce is offline  
Reply With Quote
Old 08-16-2011, 06:05 PM  
Join Date: Nov 2010
Location: Upper Fraser Valley, British Columbia
Posts: 14,647
Liked 1487 Times on 1313 Posts
Likes Given: 2606


It's like putting a round peg in a square hole. Went down to the sheet metal shop and had them make one the shape of the hole in oven and went straight out with the rectangle shape. They made a real nice one with painted steal.
nealtw is offline  
Reply With Quote
Old 08-25-2011, 03:32 PM  
Senior Member
BridgeMan's Avatar
Join Date: Aug 2011
Location: Cottage Grove, Oregon
Posts: 738
Liked 75 Times on 67 Posts


What you need is a direct-vent rectangular fan outlet, preferably with a built-in backdraft damper. The damper is there to prevent cold outside air from getting into the kitchen. I installed one several decades ago for a client in NM, and I think I found it after contacting either Broan or NuTone (can't remember which brand of hood the client furnished). I actually had to pick it up at a large building supply wholesaler in Albuquerque, and it worked like a charm.

Try to find one which has a cushioned damper (by means of a thin layer of rubber around the contact surface). They can be very noisy without the rubber, metal-on-metal banging away when the wind blows
BridgeMan is offline  
Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Microwave Removal Chuck38 General Appliance Discussion 4 12-10-2013 10:38 PM
Microwave use and outlets in an old house kmn Electrical and Wiring 6 02-27-2010 11:06 AM
Microwave use and outlets in an old house kmn Electrical and Wiring 0 02-23-2010 01:35 PM
over the counter microwave?? Christian General Appliance Discussion 12 03-01-2009 04:40 PM
Microwave on its own outlet lisaconley Electrical and Wiring 5 04-10-2008 06:57 PM

Newest Threads