HVAC Premium ABS Plastic Decorative Line Set Cover 90 Degree Vertical Elbow for Ductless Mini Split Air Conditioners - Pipe Cover - 4" - Beige 10" Round Duct Pipe padding: 20px

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But for plumbing it will fit onto a pipe that is 1/4" on the "inside" (ID) which equals to 1/2 on the outside

+ Product Details Size - 22"w X 30"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 28" or 28" x 12" duct opening (measured at the opening)

Its generous size and universal design ensure a perfect fit for a wide range of thermostat models

HVAC Premium ABS Plastic Decorative Line Set Cover 90 Degree Vertical Elbow for Ductless Mini Split Air Conditioners - Pipe Cover - 4" - Beige 10" Round Duct Pipe padding: 20px+ Product Details 90 Vertical Bend Immediately Improves the appearance of mini split, high velocity, and conventional air conditioning system line sets Used in for any application whether home or commercial. Protection Provides the ultimate defense against any kind of weather, element, or animal damage. High Quality & Durable Made of UV and fire resistant ABS plastic UL 94V 0 equivalent. Easy Installation Quick and painless installation Can be