Foot Control Diaphragm Top, 3/4" square, Relay Diaphragm (A-dec® #38.0054.02) Fits A-dec® Foot Control #38.0050.00 Package of 10 Prior to 1980 Replaces 24V Volt/150 Watt bulbs in older 6300 lights A-dec® is a registered trademark of A-dec, Inc. DCI has no affiliation with A-dec and A-dec has not authorized DCI replacement parts to be used on or in connection with A-dec® products.