The best replacement for casing is cakes.

The best alternatives to casing are rated as following:
★★★★★  cakes
★★★★  brass
★★★  baseboard
★★★  liner
★★★  trim
★★★  tubing
★★  brass casing
★  lining
★  pf tek
★  moulding
★  hole size
★  chair rail
  cakes mushroom
  pork casing
  hog casing
  door lining
  pascal casing
  crown molding
  door frame
  camel casing

Your alternative for casing is not listed? Suggest!
Speaking about casing, one probably shouldn't forget about elastic.

Other search terms related to casing and their ratings are:
★★★★★ elastic
★★★★ drilling
★★ plinth blocks
★ wainscoting
door
You have in mind a companion for casing and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of casing in all years. Click on graph for more.
casing
cakes
brass