Oil and gas vent guard with adjustable height up to 58cm for enhanced safety. [Product] GREEN LIFE Vent Guard FGG-58S [Condition] Purchased several years ago but never used. The box is slightly crushed. Effective installation width: Minimum 27cm to maximum 58cm. Please refer to the package for details. - Brand: GREEN LIFE - Model: FGG-58S - Application: Oil and gas compatible - Maximum height: 58cm - Applicable range: Approximately 27cm - Features: Vent guard