This model is considered light-duty and cannot carry heavy curtains. Please see below for estimated weight tolerance for our single and double Armor adjustable tracks. Single ,28-48": 5 lbs, 48-84": 10 lbs ,66-120": 15 lbs, Double, 28-48": 8 lbs, 48-84": 13 lbs, 66-120": 18 lbs, Keep in mind that estimates aren’t set in stone because the less you extend your rod out, the bigger the overlap is for the inner and outer rod. This makes for a sturdier rod allowing for a larger weight capacity.