I printed the adapters in eSUN Grey PLA+. The color does not match perfectly, so if you can find a better match, go for it. For both a top and a bottom adapter, you will need to print two Left pieces and two Right pieces. They can be flipped and work either way. To get this to interlock with another drawer, you will need to print feet for the bottom. In one of the pictures you can see these feet printed in black. For the stripe-style feet (which were originally black) I used 3DXTech TPU. For the round-style feet (which were originally grey) I used SainSmart TPU. For all parts, be sure to clean them well after printing. I did find that if there was hairspray residual from the bed that came into contact with an original drawer housing, it tended to eat away at the paint. So make sure your parts are fully 100% clean.