NATOTELA Fibreglass stair tread 240 x 600 x 38 mm fibreglass grille heavy duty and durable industrial staircase suitable for escape stairs, factory stairs, outdoor areas, basement etc. NATOTELA fibreglass grating 240 x 600 x 38 mm fibreglass grille MW: 30/30 mm yellow step grate stair step suitable for drainage channel and driving Garage Protective stairs escape routes farm