This is an Extra $15 discount coupon for 3-4 Layers Soundproof Curtains with the coupon code . This coupon can be used by all customers with no minimum amount, but can only be used once per order, once per customer, and can only be used to purchase 3 or 4 layers of curtain products (the product title is clearly marked with 3 Layers or 4 Layers). This curtain uses a removable felt cloth lining with damping material, which absorbs sound 2-3 times better than ordinary curtains. Meltblown cloth overlay (mask raw material) effectively reduces external dust, small particles, pollen, and odors, and acts as the last line of defense against outdoor air ingress and protects your family’s health., |Restrictions:This coupon can be used by all customers with no minimum amount, but can only be used once per order, once per customer, and can only be used to purchase 3 or 4 layers of curtain products (the product title is clearly marked with 3 Layers or 4 Layers).