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Class 4663 - Wholesale of construction materials, hardware, plumbing and heating equipment and supplies

PSIC Class 4663 covers Wholesale of construction materials, hardware, plumbing and heating equipment and supplies. Current child subclasses include Wholesale of Lumber and Planing Mill Products, Wood in the Rough,...

Level Class
Hierarchy depth 4/5
Children 8
Last verified 2026-08-13
Next step

Child codes

These are the next codes most users should open after this hub page.

46631
Wholesale of Lumber and Planing Mill Products, Wood in the Rough
 46632
Wholesale of Cement, Hydraulic
 46633
Wholesale of Masonry Materials, except Cement
 46634
Wholesale of Flat Glass
 46635
Wholesale of Hardware, Paints, Varnishes and Lacquers, and Plumbing Materials, including Fittings and Fixtures
 46636
Wholesale of Electrical Materials
 46637
Wholesale of Wallpaper and Floor Coverings
 46639
Wholesale of Construction Materials and Supplies, n.e.c.
About this level

Practical summary

Class 4663 sits in the PSIC 2019 hierarchy under G Wholesale and Retail Trade; Repair of Motor Vehicles and Motorcycles > 46 Wholesale Trade, except of Motor Vehicles and Motorcycles > 466 Other specialized wholesale. This class usually fans out into more specific subclasses such as Wholesale of Lumber and Planing Mill Products, Wood in the Rough, Wholesale of Cement, Hydraulic, and Wholesale of Masonry Materials, except Cement. It is the level people use when they already know the activity family but still need the exact five-digit match.

Administrative context

Where this code is used

This class is used when a business can already narrow the activity family and only needs to compare the final subclasses such as Wholesale of Lumber and Planing Mill Products, Wood in the Rough, Wholesale of Cement, Hydraulic, and Wholesale of Masonry Materials, except Cement. It is the level most often checked before a five-digit decision is finalized.

Selection note

How to choose it

Use this class to choose between its final subclasses such as Wholesale of Lumber and Planing Mill Products, Wood in the Rough, Wholesale of Cement, Hydraulic, and Wholesale of Masonry Materials, except Cement. If two options look close, compare the exact activity, the outputs and the way the business actually earns revenue.

Official note

Source-backed description

This class includes: Wholesale of wood in the rough Wholesale of products of primary processing of wood Wholesale of paint and varnish Wholesale of construction materials: sand and gravel Wholesale of wallpaper and floor coverings Wholesale of flat glass Wholesale of hardware and locks Wholesale of fittings and fixtures Wholesale of hot water heaters Wholesale of sanitary equipment: baths, washbasins, toilets and other sanitary porcelain Wholesale of sanitary installation equipment: tubes, pipes, fittings, taps, T- pieces, connections, rubber pipes, etc. Wholesale of tools such as hammers, saws, screwdrivers and other hand tools products, wood in the rough cement and lacquers, and plumbing materials, including fittings and fixtures supplies, n.e.c.

FAQ

What does PSIC Class 4663 cover?

PSIC Class 4663 is the four-digit layer that sits just above the final subclasses and usually defines the activity family for Wholesale of construction materials, hardware, plumbing and heating equipment and supplies.

How do I compare Class 4663 with the sibling classes?

Read the neighboring classes and compare the exact wording of the child subclasses. Nearby options include 4662 Wholesale of metals and metal ores and 4669 Wholesale of waste and scrap and other products, n.e.c..

Why does Class 4663 matter for a filing decision?

It is usually the last broad checkpoint before the five-digit subclass choice, so it is the right place to catch near-miss classifications.