Polycab 20 mm LMS FRLS uPVC Conduit Pipe – Light Mechanical Stress, 3 m Length, CPI0120001

Polycab 20 mm LMS FRLS uPVC Conduit Pipe (code CPI0120001) is a rigid uPVC FRLS (flame retardant, low smoke) conduit of the light mechanical stress class to IS 9537 (Part 3): 20 mm outside diameter (tolerance -0.3 mm), at least 17.4 mm inside diameter, supplied in 3 m lengths packed 75 to a standard pack. The 20 mm size is the standard size for lighting and fan circuits and switch drops; the light class is meant for surface runs and runs above false ceilings where the conduit will not be knocked, walked on or loaded.

Polycab India Limited is India's largest manufacturer of wires and cables, with 27 manufacturing facilities, 4,300+ authorised distributors, 2,00,000+ retailers and an export presence in 84 countries (polycab.com, October 2026). Polycab is ISO 9001:2015 certified and makes its conduits to IS 9537 (Part 3) and its conduit fittings to IS 3419, from what its catalogue calls "the highest grade of waterproof and fire-resistant polymers". Jai Enterprises supplies Polycab 20 mm LMS FRLS conduit from Bhilai and Raipur all over Chhattisgarh - Bhilai, Raipur, Durg, Korba, Bilaspur, Raigarh, Jagdalpur, Kanker, Ambikapur and every other district - and across India; price on request.

Is this the right one for you?

Check these five things before you order:

• The wires fit the bore: at least 17.4 mm inside diameter - check the number and size of wires against the conduit-capacity table you work to.
• The conduit runs on the surface or above a false ceiling where it will not be knocked or loaded - the light mechanical stress class.
• Flame-retardant, low-smoke (FRLS) conduit is wanted or specified for the building.
• Matching Polycab 20 mm fittings - circular, deep and fan boxes, bends, tees, elbows, couplers and saddles - are listed below.
• If the size does not fit: for more room, 25 mm.

At a glance

• Price: on request - call +91 9340081159
• Product: Polycab 20 mm LMS FRLS uPVC Conduit Pipe
• Product code: CPI0120001
• Outside diameter: 20 mm (tolerance -0.3 mm)
• Minimum inside diameter: 17.4 mm
• Mechanical stress class: Light Mechanical Stress (IS 9537 Part 3)
• Fire performance: FRLS - flame retardant, low smoke
• Length: 3 m
• Standard pack: 75 x 3 m (225 m)
• Colours: black, ivory, grey and red in the Polycab colour chart (availability by size and series on enquiry)
• Standard: IS 9537 (Part 3)

Specifications

• Nominal size: 20 mm (outside diameter)
• Tolerance on outside diameter: -0.3 mm
• Minimum inside diameter: 17.4 mm (light class, IS 9537 Part 3 value printed in the Polycab catalogue)
• Minimum inside diameter of the three classes at 20 mm: light 17.4 mm; medium 16.9 mm; heavy 15.8 mm
• Length: 3 m per length
• Standard pack: 75 x 3 m (225 m)
• Product code: CPI0120001
• Material: rigid uPVC, FRLS compound
• Standard: IS 9537 (Part 3); fittings to IS 3419
• Colours: black, ivory, grey and red in the Polycab colour chart (availability by size and series on enquiry)

Why choose Polycab LMS FRLS uPVC Conduit Pipe

• Flame retardant, low smoke (FRLS) compound - resists the spread of flame and gives off less smoke, for safer wiring in homes and public buildings
• Light Mechanical Stress class to IS 9537 (Part 3) - the thinnest wall and largest bore of the three classes, for surface runs and runs above false ceilings where the conduit will not be knocked, walked on or loaded
• Waterproof, fire-resistant polymer - the catalogue describes Polycab uPVC conduits as made "only from the highest grade of waterproof and fire-resistant polymers"
• Five sizes, 20 to 50 mm outside diameter - one series for lighting, power, sub-mains and risers
• 3 m lengths in standard packs - 75 lengths of 20 mm down to 15 lengths of 50 mm per pack, easy to count and order
• Matching Polycab fittings to IS 3419 - circular and deep boxes, fan boxes, bends, tees, elbows, couplers, reducers and saddles

Using 20 mm conduit

Wires per conduit: a 20 mm conduit of the light class has at least 17.4 mm of clear bore. Work out how many wires it can take from the conduit-capacity table you follow (for example the one in IS 732) or the consultant's drawings, and step up a size for long runs with several bends.

Joining and bending: join lengths with a Polycab 20 mm coupler (PVC solvent cement makes the joint permanent in concealed work); make bends with a bending spring of the right size or with Polycab bends and elbows.

Fixing: fix surface runs with saddles at regular spacing; in slabs, tie the conduit to the reinforcement and seal open ends before the concrete is poured; leave a draw wire in long runs.

Where it is used

• The standard size for lighting and fan circuits and switch drops
• Surface wiring on walls and ceilings in homes, shops and offices
• Runs above false ceilings and in service voids
• Refurbishment work where walls are not chased

Other sizes of Polycab LMS FRLS uPVC Conduit Pipe

The Polycab LMS FRLS uPVC Conduit Pipe overview page compares all 5 side by side.

• Polycab LMS FRLS uPVC Conduit Pipe 20 mm (this page) - code CPI0120001, minimum inside diameter 17.4 mm, pack 75 x 3 m (225 m)
• Polycab LMS FRLS uPVC Conduit Pipe 25 mm - code CPI0125001, minimum inside diameter 22.1 mm, pack 50 x 3 m (150 m)
• Polycab LMS FRLS uPVC Conduit Pipe 32 mm - code CPI0132001, minimum inside diameter 28.6 mm, pack 25 x 3 m (75 m)
• Polycab LMS FRLS uPVC Conduit Pipe 40 mm - code CPI0140001, minimum inside diameter 35.8 mm, pack 25 x 3 m (75 m)
• Polycab LMS FRLS uPVC Conduit Pipe 50 mm - code CPI0150001, minimum inside diameter 45.1 mm, pack 15 x 3 m (45 m)

Related products

• Polycab MMS FRLS uPVC Conduit Pipe 20 mm - medium mechanical stress, minimum inside diameter 16.9 mm, code CPI0220001
• Polycab HMS FRLS uPVC Conduit Pipe 20 mm - heavy mechanical stress, minimum inside diameter 15.8 mm, code CPI0320001
• Polycab LHSFT MMS Conduit Pipe 20 mm - medium mechanical stress, minimum inside diameter 16.9 mm, code CPI0420002
• Polycab LHSFT HMS Conduit Pipe 20 mm - heavy mechanical stress, minimum inside diameter 15.8 mm, code CPI0720002
• Matching 20 mm fittings: Polycab PVC Circular Box - Terminal (1 Way), Polycab PVC Circular Box - Tee (3 Way), Polycab PVC Deep Circular Box - Terminal (1 Way), Polycab PVC Fan Box (Standard), Polycab PVC Conduit Coupler, Polycab PVC Inspection Bend, Polycab PVC Space Bar Saddle
• All uPVC conduits and all conduit fittings

Frequently asked questions

What is the inside diameter of Polycab 20 mm LMS FRLS conduit?

At least 17.4 mm - the IS 9537 Part 3 minimum for the light class at 20 mm outside diameter (tolerance -0.3 mm), as printed in the Polycab catalogue. At 20 mm the three classes have a minimum bore of 17.4 mm (light), 16.9 mm (medium) and 15.8 mm (heavy).

How many lengths are in a pack of Polycab 20 mm LMS FRLS conduit?

75 lengths of 3 m - 225 m per standard pack. Tell us the number of lengths or packs you need.

What is the product code of Polycab 20 mm LMS FRLS conduit?

CPI0120001. Quote it on your purchase order or tender so the right series, class and size are supplied.

What is 20 mm conduit used for?

Lighting and fan circuits, switch drops and the wiring to light points - the size most electricians use for lighting runs in homes and offices. The number of wires it can take depends on the wire size; check it against the conduit-capacity table you work to.

LMS, MMS or HMS - which class should I choose?

Light (LMS) for surface runs and above false ceilings, medium (MMS) for conduit concealed in walls and ceilings, heavy (HMS) for slabs, floors and places where the conduit can be crushed or knocked. At 20 mm the minimum bore is 17.4 mm (light), 16.9 mm (medium) and 15.8 mm (heavy).

Where can I buy Polycab 20 mm LMS FRLS conduit in Chhattisgarh?

From Jai Enterprises, Bhilai and Raipur, which supplies Polycab conduits and fittings across Chhattisgarh - Korba, Bilaspur, Raigarh, Jagdalpur, Kanker, Ambikapur and every other district - and across India. Call +91 9340081159 with the size, quantity and delivery location and we will confirm the price, availability and lead time.

How to order

Supplied by Jai Enterprises, Bhilai and Raipur, to every district of Chhattisgarh and across India. To request a price for Polycab 20 mm LMS FRLS conduit (CPI0120001), call +91 9340081159 or send an enquiry from this page with the size, the quantity (lengths or packs) and the delivery location, and we will confirm the price, stock and lead time.