i built a platform in the back of my tundra and the drawers are on 5' slides. i originally used thin strips of UHMW plastic as runners to reduce friction and allow the drawer to slide out easily. it half-assed worked, but still had a lot of drop the further i pulled the drawer out. i removed that and made my own slide system by using rollerblade wheel bearings and 5/16" bolts as an axle. i made two rows of the bearings on each side of the box with a piece of uni-strut mounted to the drawer and slide in between the two rows of bearings. it worked ok, but would bind up and had some slop in it. i ended up going on amazon and buying 60" heavy duty slides and they work great.
i built this back before covid and the 300% increase in lumber. my 3/4" plywood was $30 a sheet at home depot and now its almost $70 a sheet...not sure how much the slides have gone up in price. if you are going a short distance on the drawer, you might could get by using plastic strips as runners on the bottom and sides. the roller bearings are not a bad idea and would probably do better on a short drawer...my drawer is over 6' deep and i was running the two rows of bearings spaced 9" apart, so that was a lot of bearings to get perfectly aligned. i used 5/16" bolts as the axle and used blind nuts in the side of the box for the bolt to thread into and not need a nut sticking out on the outside of the box. like i said, that would probably be doable with a shorter drawer.
here's a link to the DIY slides...
Make your own Truck Bed Drawers — Pask Makes
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