Defroster Ducts and Vents

lowes show have some its not stock stuff but it works .. as for the crap coming at u are u talking bout them wing vents under the dash ? if so heres how i clean mine out after i messed up and opened them after it sat of 2 years a 65mph and with shorts on .. shorts are a baad ideal lol so where pants and some thing to shild ur eyes and then just run her tell see's clean