Directions to Duane Lapp Directions to Duane Lapp Search | Advanced Search | New Members | Coupons and Discounts | All Categories To ensure the technician can contact you, please enter your email accurately and consider adding your phone number in the message body. Advertising & Media >> CSIA Certified >> Delaware Duane Lapp 1368 Rose Valley School RdDover, DE 19904 | map (302) 674-1631 | fax: (302) 674-3083 Visit Site Get directions to: Lapp, Duane, 1368 Rose Valley School Rd, Dover DE Get directions from: Click to Print This Page To ensure the technician can contact you, please enter your email address accurately and consider adding your phone number in the message body.