A swimming pool plant heating room with warning sign outside caution plant room plant room keep locked shut no unauthorized unauthorised access pipeworks pipework filtration equipment system indoor installation air conditioning water neat tidy organised detailed plumbing schematic intricate pattern maze piping tubes tubing pool circulation cleaning chlorine warning signage danger red unit boiler tank aluminum copper foil insulated insulation safety at work human resources plugs sockets brick wall outside breeze blocks wall laid out complicated complex horizontal vertical no entry big large white tank container vessel filter tube pump house forbidden banned

圖片編號： 288897154
拍攝者： Nicecloud