Inventory of in-store items due to store closure. Both are the same. Twin PaluQ fluorescent lamps with a cool color temperature, gentle on the eyes. The difference is in lifespan: 16,000 hours and 12,000 hours. Both are cool color, but the brightness differs slightly between FHD100ECW and FHD100ECW/H. - Brand: Panasonic - Model Name: Twin PaluQ - Shape: 100-type - Color Temperature: Cool - Series: Premier Thank you for viewing.