PCA Wye PCA Wye Description Layflat sewn assembly splits one length of duct into two. REQUEST A QUOTE Contact Information Product Attributes Notes and/or comments Please check the captcha box to proceed SUBMIT REQUEST FORM Specifications Specifications Straight Wye – Inlet is the same size as outlets. Transition Wye – Tapers to smaller or larger diameter. Available sizes (OD): 4″, 8″, 12″, 14″ & 24″