Teeter-Totter via Amazon offers the Teeter-Totter Blackout Thermal 54" Insulated Curtain Panel in several colors (White pictured) for $21.99. Coupon code " CURTAIN1" cuts it to $10.99. With free shipping for Prime members, that's $11 off list and the lowest price we could find. They measure 63" long. Deal ends August 14.

Note: The same code also discounts the other lengths