20" X 12" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling w26h26 High Quality – High quality

High Quality – High quality ABS plastic will never rust

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this thermostat guard is compatible with most standard thermostat models

actual front end outer dimensions are approximately 2" wider

+ Product Details Size - 10"w X 6"h is the size for the duct opening measurement only

20" X 12" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling w26h26 High Quality – High quality+ Product Details Size 20"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 75" width X 13. 75" height. High Quality High quality steel construction, no scuff powder coat durable finish, smooth, shiny, scratch resistant, no sharp edges, 2 recessed screw holes on each side with screws included, screws same color as vent cover, easy installation. Adjustable airflow control Adjustable