[A930Rocket]

The 3/0x1/0 slider can be cleaned by removing the sliding portion. Just unlock and lift up on it. It will pull out from the bottom and you can clean it. Reach from the inside to clean the outside of the fixed portion.

Never bought windows from HD/Lowes, but have from other bldg suppliers. Mist places that carry lumber, trim , etc have s showroom you can look at the windows and price out.