yes the dc stuff is popular but I don't like the 10 min timers.. ya I'm old Scholl and like the 110v ones.. but for a while com heaters vanished but since resurfaced. so what I have done is just make my own for racers. 110 elements and all local fabric. think I have sold 25 heaters now and everyone has liked them. recently I made 5 of the heaters for the low pro heads so guys don't have to cut the standard head heaters to get them to work.