The LH0154 is a lamp holder socket that is unshunted, stationary, and snaps in. It is made by Leviton and is model 524 . It fits R17d RDC HO/VHO lamp bases and has ratings of 660w and 600v. The LH0154 Leviton 524 is made of thermoplastic and is UL and CSA listed. It is 0.629 inches tall ...