Set	Middle Diameter Pipe (mm)	10 Year Saving (kg CO₂)	20 Year Saving (kg CO₂)	30 Year Saving (kg CO₂)	Largest Diameter Pipe (mm)	10 Year Saving (kg CO₂)	20 Year Saving (kg CO₂)	30 Year Saving (kg CO₂)
1	250	14,189	28,377	42,566	350	15,264	30,528	45,793
2	225	10,878	21,756	32,635	355	11,525	23,050	34,574
3	250	48,609	97,217	145,826	350	52,243	104,486	156,729
4	225	35,982	71,965	107,947	355	38,117	76,234	114,351
5	250	81,844	163,688	245,532	350	87,927	175,854	263,781
6	225	59,626	119,252	178,878	355	63,161	126,321	189,482
7	250	100,241	200,481	300,722	350	107,469	214,938	322,408
8	225	75,135	150,269	225,404	355	79,469	158,939	238,408
9	250	152,492	304,983	457,475	350	163,425	326,850	490,275
10	225	112,771	225,541	338,312	355	119,267	238,534	357,802
11	250	211,291	422,583	633,874	350	226,372	452,745	679,117
12	225	154,582	309,164	463,745	355	163,477	326,953	490,430
13	250	173,317	346,634	519,951	350	185,577	371,154	556,731
14	225	132,619	265,237	397,856	355	140,141	280,281	420,422
15	250	263,291	526,582	789,873	350	281,795	563,590	845,385
16	225	198,784	397,569	596,353	355	210,036	420,073	630,109
17	250	364,435	728,871	1,093,306	350	389,918	779,837	1,169,755
18	225	272,204	544,408	816,612	355	287,587	575,174	862,761
19	250	341,430	682,861	1,024,291	350	365,377	730,754	1,096,131
20	225	262,225	524,449	786,674	355	277,002	554,005	831,007
21	250	518,570	1,037,141	1,555,711	350	554,696	1,109,392	1,664,088
22	225	392,931	785,862	1,178,792	355	415,025	830,050	1,245,075
23	250	717,675	1,435,349	2,153,024	350	767,408	1,534,815	2,302,223
24	225	537,927	1,075,853	1,613,780	355	568,120	1,136,241	1,704,361