These are complete garbage.  As other reviewers have mentioned, our blinds suddenly snapped and exploded.  This happened all on its own, not while opening or closing. We have no children, so blinds were always treated with great care.  The other 2 blinds we bought for smaller windows have stretched out so much that they almost hit the floor.  Don't waste your money.  Hoping for a complete refund before pursuing a lawsuit for dangerous spring mechanism.  Wayfair has told me they do not guarantee this product or take any responsibility for selling a potentially dangerous item.