The foam insert for LMB 6x6 fits perfectly into any kind of the Peli Case 1637. It is includet in all LMB 6x6 sets (LMB 6x6 Clamp On 3-Stage Set, LMB 6x6 15mm Studio 3-Stage Set, LMB 6x6 19mm Studio 3-Stage Set, LMB 6x6 Pro 15mm Studio Set and LMB 6x6 Pro 19mm Studio Set)