18" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length 18in diameter provides a modern look and

provides a modern look and quiet operation due to its half-inch by half-inch cube design

4" X 10" Brass Victorian Floor Register Grille - Modern Contempo Decorative Grate - HVAC Vent Duct Cover - Brass Plated

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Width vs Height:

The Contempo slotted Grate

18" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length 18in diameter provides a modern look and+ Product Details High Quality Aluminum housing on the outside and on the inside for the best insulation value Insulation A thick blanket of fiberglass insulation provides you with an R Value of 4. 2 Energy Efficient Air tight inner core decreases the pressure loss and provides a more hygienic environment high energy efficient No fiberglass erosion into air stream Design Designed to withstand bends and sharp turns without kinking. Tough reinforced