Dutton-Lainson 6354 4 Roller Bunks The Dutton-Lainson 4 roller bunks are sold in pairs and are a quick, inexpensive way to upgrade bunk style trailers to rollers. . The rollers are made of a durable wear resistant inner surface and a softer cushioned outer surface. Constructed from heavy 14 gauge steel with a black powder coat finish for durability in marine environments. Easy to install, these bunks can be vertically mounted to 2 x 4 bunk boards, existing mounting brackets, or, mount with the s