Aprilaire 4517 Power Supply Board<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> The Aprilaire 4517 dehumidifier power supply is a key component to keeping your whole-house dehumidifier working properly </span></li><li><span class="a-list-item"> The 4517 power supply replacement keeps your Aprilaire whole-house dehumidifier working at its best. The Aprilaire 4517 dehumidifier power supply board is a replacement power supply board </span></li><li><span class="a-list-item"> The Aprilaire 4517 dehumidifier power supply board is a replacement power supply board that is designed for use with Aprilaire models 1700， 1720， 1750 and 1770 dehumidifiers </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/5133LrIvB-L.jpg" noproxy>