SED of LL Peg. The SWS and LWS data are shown in full black. The dashed red curve shows a model assuming thermal contact between all dust species, whereas the full blue line shows a model assuming no thermal contact. The dust composition of both models consists of a-C grains in DHS shapes and SiC, MgS and Fe grains in CDE shapes. The full green model includes a-C grains in CDE shapes and assumes no thermal contact.