This 1 7/8″ wide inboard feeder, by the manufacturers of the EZ Nuc, provides a durable, versatile solution for uses that require a narrow feeder. The cap and ladder design eliminates drowning and limits the consumption to simulate a trickle flow. Ideal for 5- frame or 4- frame nucs. When used right under a flat lid, a shallow rim will be needed to allow bees access.