7/8" Insulated Copper Coil Line - Seamless Pipe Tube for HVAC, Refrigerant - 1/2" White Insulation - 50' Long Color_White If your hole is 14"

If your hole is 14" wide by 20" tall

For a visual guide on how to measure your vent hole before ordering a grille

7/8" Insulated Copper Coil Line - Seamless Pipe Tube for HVAC

is fireproof and ensures efficient thermal performance

7/8" Insulated Copper Coil Line - Seamless Pipe Tube for HVAC, Refrigerant - 1/2" White Insulation - 50' Long Color_White If your hole is 14"7 8" Insulated Copper Coil Line Seamless Pipe Tube for HVAC, Refrigerant 1 2" White Insulation 50' Long High Quality Copper Coil Meets Beats ASTM B280 Standard for Air Conditioning and Refrigeration (Made From C12200 99. 9% Pure Copper). 1 2" White insulation will give you a good R value of 3. 3, And Meets Beats ASTM B280 Standard, And is classified as Class 1 Fire Proof B1 Plain Ends Gives you the freedom to cut and flare at your own project needs,