Update 51620 honestly cant recommend this any longer.. Simply because of the price hike. In 6 months they price has risen 20 dollars.  There are other quality shades for less.  27.5 x 60 should be about 47-51 dollars.  
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At 47 - Probably one of best purchases. Super super easy to install. Easy, motion. Great option if you have dogs and you want lower half closed but still let some light in and also be able to lower top half to let fill light in.