Elkhart RV Parts offers a 31 Gallon RV Holding Tank with dimensions 34" x 19 1/2" x 13" (SKU 4848 H1017 ERV121000). This tank is supplied as a blank tank without fittings installed, allowing you to install the termination fitting on the side or wherever needed. The tank is constructed from durable black polyethylene with a 3" hub and probes included, and a wall thickness of approximately 0.1875 to 0.20 inches. Please note that Elkhart RV Parts does not provide custom fitting installation; you will need to install fittings yourself or use a local RV service center. The standard production model includes the fitting at the front, but the blank tank option is available for custom installation. For delivery timelines, standard shipping estimates are provided, but expedited shipping options may be discussed by contacting customer support directly. For more details and to order, visit the product page at elkhartrvparts.com.