16" X 12" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling w32h32 actual front end outer dimensions

actual front end outer dimensions are approximately 28 5/8" width X 24 5/8" height

Example: If your hole is 20" wide by 14" tall

Universal Fit – Dimensions of 6-3/8" wide x 3-1/2" high x 3" deep make it compatible with most standard thermostat models

+ Product Description Protect and secure your thermostat with this high-quality Clear Plastic Thermostat Guard

+ Product Details Size – 18"w X 26"h is the size for the duct opening measurement only

16" X 12" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling w32h32 actual front end outer dimensions+ Product Details Size 16"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 875" width X 14" 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 airflow