Plumb Pak PP855-69 Air Gap for Standpipes, Grey, FITS 1-1/2" AND 2" METAL OR Product Description Keeney's air gap for standpipes is designed for washing machine discharge hoses, dehumidifiers, water filtration devices, water softeners, and appliance that drains into a standpipe. It allows a soft rubber washer hose or aluminum washer drain to hook up to a standpipe, fitting 1-1/2 in. and 2 in. metal or plastic standpipes. It is constructed of heavy duty plastic for long-term durability. From the Manufacturer Standpipe airgap for washing machine discharge hoses, dehumidifiers, water filtration devices, water softeners or any appliance that drains into a standpipe. A Allows soft rubber hose or aluminum drain hook to shars a standpipe. Fits 1-1/2 and 2" metal or plastic standpipes. Features BACKFLOW PROTECTION: Provides full backflow and anti-siphon protection to prevent wastewater from getting into water supply EASY TO INSTALL: Fits 1-1/2-in and 2-in metal or plastic standpipes, can be mounted at 3 different levels STANDARD DESIGN: Allows soft rubber washer hose or aluminum washer drain hook up to share standpipe with other air gap units, recommended usage 1 to 7 gallons/minute (3. 7 to 26. 5 liters/minute) VARIOUS APPLICATIONS: For use with washing machine discharge, dehumidifiers, water filtration devices, and water softeners COMPLIANCE: UPC listed and tested for compliance to IPC and NSF standards, provides more than twice the code-required minimum air gap opening USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.