product: Knock & Lock
manufacturer: Overhead Door
web: overheaddoor.com
The Knock & Lock Breakaway Door System offers a rugged, puncture-proof interior skin with a steel exterior and polystyrene insulation of up to 2 inches thick, providing an R-value of 8.56. Door features include: automatic reset; single- and dual-panel breaks (in and out); panel widths of 8 to 10 feet in 21- and 24-inch heights; dual slide locks; and 2- or 3-inch rollers.
product: industrial and residential doors

