Clip-in slotvents Renson has launched its clip-in slotvents. The clip-in tipvent is an internal slotvent and the clip-in canopy is the external version - both can be fitted by hand using the clip-in mechanism. The tipvent and canopy are made from durable aluminium and both are available in three sizes to suit the 4000mm2, 6000mm2 (or 6500mm2) and the 8000mm2 …