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Welcome to Hollis Contractors Group Thank you for visiting our online store. Use the category links to start shopping. Please feel free to contact us if you have questions about our products or if you are looking for something specific. To Insure You Receive the Correct Parts Please provide unit model number Please provide a phone number so we may contact you if part is obsolete or in case the part number has been changed or substituted Featured Products All Old Style Models (Rebuilt) 48HWC18, 48HWC24, 36HWC18, 36HWC24, 51HWC24, 61HWC24 etc. (Old style units use a time delay relay) Blemished Units 51HWC242A-9B Bottom A/C Tray E-mail a friend about Hollis Contractors Group.