How To Determine What To Order (UDG)
Gates are available in four standard sizes: UDG-22, UDG-27, UDG-32 and UDG-37. For angle iron guardrail, measure the opening between the guardrails. The gate size should be equal to or greater than the opening. This will insure that when the gate is closed, it will contact the vertical post of the opposite guardrail. Thus, if the opening is 25″, a UDG-27 gate would be needed.
For pipe guardrail, we offer an easy-to-install kit that works for both 1 ½” and 2” pipe. We also offer an easy-to-install kit for square tubing (up to 2 ½”). For all applications we do offer a Holdtight Magnet Closure Kit. Otherwise, you can weld or attach flat plates to the guardrail as shown in several pictures in the literature and on our website, and then simply order the next larger size gate.