| 54341 | Installation of water well pumps | |
| 54341 | Installation of well piping systems | |
| 54760 | Installation of window frames | |
| 54710 | Installation of window glass | |
| 54760 | Installation of windows | |
| 54770 | Installation of wire fences | |
| 54770 | Installation of wood fences | |
| 54619 | Installation services n.e.c., electrical | |
| 54699 | Installation services n.e.c., other | |
| 87360 | Installation services of electrical machinery and apparatus n.e.c. | |
| 87310 | Installation services of fabricated metal products, except machinery and equipment | |
| 87320 | Installation services of machinery and equipment n.e.c. | |
| 87330 | Installation services of office and computing machinery | |
| 87350 | Installation services of professional medical, precision and optical instruments | |
| 87340 | Installation services of radio, television and communications equipment and apparatus | |
| 54270 | Installations, beach, general construction of | |
| 92390 | Institutes, professional, education services provided by | |
| 91121 | Institutions, educational, administrative services related to | |
| 91124 | Institutions, religious, support services for | |
| 93311 | Institutions, residential, care of elderly persons by | |
| 93311 | Institutions, residential, care of mentally disabled persons by | |
| 93311 | Institutions, residential, care of physically disabled persons by | |
| 93311 | Institutions, residential, welfare services delivered through | |
| 49640 | Instrument panels for aircraft | |
| 48314 | Instruments for astronomical observation | |
| 48245 | Instruments for measuring or checking semiconductor wafer or devices | |
| 87154 | Instruments, checking, maintenance and repair of | |
| 38996 | Instruments, demonstrational, unsuitable for other uses | |
| 48130 | Instruments, dental (excl. veterinary and electro-medical apparatus) | |
| 48232 | Instruments, drafting | |
| 48232 | Instruments, drawing | |
| 48150 | Instruments, embalming | |
| 48150 | Instruments, embryotomy | |
| 48212 | Instruments, geophysical | |
| 48150 | Instruments, gynaecological | |
| 48212 | Instruments, hydrographic | |
| 48212 | Instruments, hydrological | |
| 48212 | Instruments, levelling, surveyors' | |
| 48150 | Instruments, lithotrity | |
| 48232 | Instruments, marking-out (excl. tools used in graphic arts) | |