What I was going to say was that when I turned 54 I had a brain annurism and a stroke and have not been able to walk for over 8 years and they happened two days before my scheduled preventative surgery and I never anticipated that because I was in perfect shape and a Chiropractor told me to get a brain MRI. 

Often it won't be a replaceable filter like a whole-house furnace would have, but a piece of wire or plastic mesh that you slide out of the front of the unit, wash, dry, and reinstall.If you get funky, musty smells, unplug it, and take the entire plastic front off of it. 

The 1 inch plastic ones sag and discolor,  the metal ones get bent out of shape in no time.   

I don't want to train my competition and I don't want the hassles of people whom you help but want their money back because they didn't work hard enough to get a deal.Sometimes, a good deed gets punished.This site is full of newbies who expect to get something for nothing.The world does not work like that.Can you imagine someone who wants to be a surgeon and wants to go through med school for free in a few days and wants to have a successful surgery and get paid $10,000 in 30 days?

(green counter tops from the clearance rack, pink plastic backsplashes on special, etc.)4.

While there, may as well ask if they have anyone that specializes in these, the metaphor here being that if you need knee surgery then you don't need a general practitioner doctor or a cancer doctor or a brain surgery doctor, you need a doctor that's a joint surgeon.

Just junk lying around, plastic crates, dirty old piss jugs(!)

Same goes for a nice plastic tub surround vs tile (like a high-quality one-piece insert, not some crap piece-mail glue-on).The good news is, there are sooo many choices.

OEM plastic or aftermarket?

I would recommend staying away from the big box or DIY sprayers (plastic body housings) as they are not meant to be used professionally and often cannot be repaired.