Product is very good. One problem I had was with Assembly Instructions. The step one part "C" is shown with the grove facing inside. When inserting part "C" into the rectangular metal frame make sure that part "C" flat part is on the inside where the screw holes are. The part "C" is ends are not square (90 degree) so in makes a difference . Other than that all is perfect. That is why I deducted 1 star. 
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