This gas bottle holder features openings for hoses and pipes for gas/propane stoves, geyser/water heaters, heaters and lamps. All attachments can remain fitted while mounted onto any Front Runner Rack tray.The high strength steel holder is finished with the same durable, weather resistant powder coating as the Front Runner Slimline II Rack.Like all Front Runner rack accessories, the installation is simple. Just slide the bolts into the t-slots of any rack tray, set down the holder and adjust for tank size, then add nuts and tighten.The collar and bottle/tank can be easily removed to move the tank around the campsite or when refilling.The latches that hold that tank and collar to the base are lockable and will fit standard padlocks. Locks not included.The unique design adjusts to accommodate multiple size gas bottles.Maximum bottle size details: Max Cylinder Body Height: 12.6''/ 320mm (excludes top Cylinder collar) Max Cylinder Body Diameter: 11'' / 280mm Max Top Cylinder Collar Diameter: 6.7'' / 170mm Max Weight: 22lbs (10kg) For more info please download the assembly guide available in the INSTALLTION tab.