1/2" Insulated Copper Coil Line - 1/2" Black Insulation - 15' Long Fixed Blades The grille features counter-sunk screw

The grille features counter-sunk screw holes that prevent paint from peeling during installation

+ Product Details Size - 18"w X 20"h is the size for the duct opening measurement only

rust-free aluminum construction with smooth finished edges and counter-sunk screw holes (screws included)

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1/2" Insulated Copper Coil Line - 1/2" Black Insulation - 15' Long Fixed Blades The grille features counter-sunk screwR value rating of insulation r3. 3 Insulation density is 30kgs cbm = 0. 035 w mk Works for every air conditioning & refrigeration application including ductless mini split, heat pump and centralized air ducted units. Pressure rating: 2300 to 6500 psi, much more than the required 700 psi for r410 Our coils have a very high PSI burst pressure. Whilst the maximum pressure for R410 is 700 PSI, our coils offer from 2300 to 6500 PSI See chart below: 1 4"