A modern HDTV with a 40-inch screen measures around 3.1 inches in thickness, 38.7 inches in width, and 24.7 inches in height. This television weighs approximately 32 to 33 pounds.
According to Sears, the Samsung 40-inch 1080p LED HDTV without the stand measures 3.7 inches deep by 36.1 inches wide by 21 inches tall. Without the stand, the Insignia 40-inch LED 1080p HDTV measures 3.3 inches deep by 36.4 inches wide by 21.5 inches tall. Best Buy lists the dimensions of the Sony Bravia 40-inch LED 1080p Smart HDTV as 3.38 inches deep by 36.5 inches wide by 21.88 inches tall without the stand.