1964 – Renner buys a Lincoln Door Clamp from Berry Door of Birmingham, MI, and creates Delden Mfg. Co, with Dick Wright, Harry Link and Elmer Renner as minority partners. Delden is named for Dee Layne, Dennis and Denise; his three children. With the clamp, Delden can make an 8×7 wood door for less than $30.
1966 – Gene and Dick Wright form Renner-Wright Corporation in St. Louis, making garage doors with a Lincoln Door Clamp.
1969 – Delden begins producing fiberglass and aluminum garage doors.
1971 – Renner-Wright becomes Delden, as Dick Wright sells his share to Renner.
1980 – Delden buys a rollformer and begins producing its own commercial steel doors. Renner is elected president of the National Association of Garage Door Manufacturers (NAGDM).
1981 – Delden opens Delden of Iowa (owned by Dennis Renner, Gene’s son).
1982 – With Renner as President, Delden, Amarr (Winston-Salem, NC), and Ankmar (Denver, CO) form the Garage Door Group (GDG) to make residential raised-panel steel garage doors in Kansas City. GDG buys Roll-Easy Springs of Kansas City.
1986 – Elmer Renner dies.
1989 – GDG moves to Lawrence, KS; to a plant built and owned by the Brenner family of Amarr.
1991 – Renner Partners with Rick Vinson to open Delden Mfg. of Illinois, near Joliet.
1992 – Gene Renner purchases Harry Link’s and Dick Wright’s shares of Delden.
1994 – Amarr and Delden buy Ankmar’s share in GDG.
1997 – Amarr buys Delden Mfg. of Illinois.
1998 – Amarr purchases Delden’s share in GDG.
2000 – Delden builds a new plant in Kansas City with 84,000 square feet of room.
2003 – Gene Renner retires. His daughter, Denise, becomes President of Delden.
2006 – Rick Vinson becomes co-owner for Delden of Iowa.
2012 – Denise Dahms (Gene Renner’s daughter) has continued to fulfill the Delden tradition with customer service, an honest approach and good old fashioned hard work. She remains open to new ideas and more efficient strategies to keep Delden Mfg. a staple in the Midwest.
2014 – Delden celebrates 50 years!
2016 – Renner Supply celebrates 60 years, Gene Renner passes away at the age of 88.
2018 – Renner Supply Company Re-Brands as “Renner Garage Door”
Today, Delden has over 100 employees and five branches throughout the Midwest, including Kansas City, St. Louis, Springfield, Camdenton MO and Des Moines IA. Four of these branches; Kansas City, St. Louis, Springfield and Camdenton are accompanied by Renner Garage Door installation divisions. Gene Renner always credited his success to his earlier management team and expressed confidence that Delden has a strong management team for the future.