Holmes 20 in Whisper Quiet Electric Household Box Fan

If this plastic fan is light and not-so-powerful, then why do I give it five stars? (1) When watching TV in the same room with the fan it is very quiet on low speed; (2) The three speeds are distinctively different giving choices that are all reasonably quiet; (3) We just wanted a fan to draw air from a second room, thru the doorway and out a window in the living room. This fan gets it done; (4) The fan sits easily on the window sill and leaves plenty of room for the window screen; (5) with a rubber-like laced shelf liner under the fan, it will not "walk" or move due to vibration when on high speed; (6) the fan is inexpensive, so even if it quits working we can afford to purchase a replacement; (7) it won't suck the furniture out the window, but has plenty of power to move the air thru two rooms.