Do they make baseboard heat replacement covers....?

yes - try looking online - perhaps plumbing supply stores? They usually show the different lengths of the entire set up - then a section showing 'parts' only (end caps, left, right, the joints for corners, etc.) You might even be able to find them at Home Depot, Lowe's or Ace Hardware (their online suppliers).

Home Depot, Menards, Lowes, and Ace Hardware.

Any Lowes or Home Depot will have them. Bring depth measurements (distance from wall) with you. If not available go to a plumbing supply.

i want to do this with mine.

https://ezsnapbaseboardheatercovers.com/

and try just doing a search for baseboard covers

yes, any big box home improvement store. There are many sizes so take your old one with you or at least measure before you go

Yes. Home Depot and more have them. If yours are off, you might think about vacuuming the elements too before you replace.

https://www.google.com/search?q=baseboard+heat+replacement+covers&rlz=1C1BLWB_enUS700US700&source=lnms&tbm=isch&sa=X&ved=0ahUKEwir_uTN_8XWAhVG4iYKHd3aAfkQ_AUICygC&biw=1024&bih=714

Do you know the manufacturer? I would search their website and give them a call.

Yes, I got some at a local pluming supply store

Give us a call at EZ Snap Covers. We will cut them to size. 1-866-740-0005 or email Support@EZSnapCovers.com. Here is our website: https://ezsnapbaseboardheatercovers.com We are working on a new website. Coming Soon...

EZ Snap Covers now being sold online at Lowes! We sell complete kits in 3', 4', 5', 6' and 7'.

Also check out our website at www.EZSnapCovers.com.