#8,793 in Tools & Home Improvement
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Reddit mentions of 14"w X 8"h Steel Return Air Grilles - Sidewall and Ceiling - HVAC Duct Cover - White [Outer Dimensions: 15.75"w X 9.75"h]
Sentiment score: 1
Reddit mentions: 1
We found 1 Reddit mentions of 14"w X 8"h Steel Return Air Grilles - Sidewall and Ceiling - HVAC Duct Cover - White [Outer Dimensions: 15.75"w X 9.75"h]. Here are the top ones.
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14"w X 8"h Is The Size For The Duct Opening Measurement Only, Actual Front End Outer Dimensions Are 15.75" Width X 9.75" Height - SEE BELOW IN DESCRIPTION HOW TO MEASURE A GRILLEHIGH QUALITY Solid Stamped Steel Construction With Recessed Screw Holes (SCREWS INCLUDED) To Easily Install On Ceiling Or SidewallQUALITY PACKAGING - Carefully Shrink Wrapped With Solid Cardboard Backing To Prevent Damage In Shipment - Hand Inspected for QualityHEAVY STEEL CONSTRUCTION - No Scuff Powder Coat Finish - Smooth, Shiny, Scratch-Resistant, Beautiful. Looks Like It Was Just WaxedUNRESTRICTED AIRFLOW For Your HVAC System - 50° Angled To Provide Maximum Airflow – ½ Inch Spaced Fins
Specs:
| Color | White |
| Size | 14 X 8 |
I've gone a more radical way. My 2 post rack is under the staircase - had to cut the side and reframe it to get the rack there in the first place. There are three cuts: one for 20x30x1 AC filter, the other for access, and the third hosts a row of 8 120mm fans (Scythe Slipstream, https://www.newegg.com/scythe-sy1225sl12sl-slipstream-case-fan/p/N82E16835185056?Item=N82E16835185056, out of stock but it'll give you an idea).
The fan grid connects the rack space with an under the stair closet, so I cut the drywall above the door and installed a return air grill similar to this: https://www.amazon.com/Steel-Return-Air-Grilles-Dimensions/dp/B0064Q8ZOM There is some passive convective ventilation even if the fan panel is off.
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I'm surprised how cold and quiet this setup turned out to be. Case in point, if you read about USG Pro 4 port, you'll find immediately that it whines like a banshee - but I don't even hear it. Fan panel noise is well below the noise caused by house HVACs running, and Slipstream fans have a nice white noise spectrum which doesn't stand out much. Fan panel is controlled by a custom app, the setpoint is set to 30.5C - equipment works there for over 15 years now, temperature was never a problem.