the frame the mask frame further includes lower headgear connection points 170 for attachment to the headgear which holds the mask in place on the patient 39 s face upper headgear connection points may be formed in the forehead support not shown with reference to fig1 to 3 a it can be seen that the mask frame includes two ports 180 approximately 2 5 cm apart located in recesses 190 in the base of the mask frame 100 these recesses are positioned in between the lower headgear strap connection points 170 the ports are positioned so that in use oxygen or other breathable gas can be delivered close to the patient 39 s nares each port is formed as a tubular spigot 185 with an approximate external diameter of 4 mm and an approximate length of 1 cm the spigot 185 forms the male connector onto which small bore tubing supplying for example oxygen may be attached an elevational cross section through the port is shown in fig3 b and a lateral cross section at fig3 c as best seen in fig3 b and 3 c each recess 190 is approximately rectangular in elevation fig3 a and closed off from the mask cavity except for an aperture 200 extending through the recess upper wall 210 between the bore 220 of the spigot 185 and the mask cavity the recess is bounded by the upper wall 210 side wall portions 230 240 and a rear wall portion 250.