Why Trade Only?
CSU Ltd supplies exclusively to the trade — glaziers, fabricators, contractors and developers. We never sell to the public, and never will. Here is why that protects your business and your margins.
Trade only
Protecting Your Business
Many sealed unit manufacturers also sell directly to the public — competing with the very trade customers they supply. CSU Ltd has never done this. Our trade-only commitment means four things you can rely on:
We Never Compete With You
Your customers cannot buy from us directly. Your margins are protected and the relationship with your customer stays yours alone.
True Trade Pricing
Our prices reflect genuine manufacturer-to-trade costs — not inflated “trade” prices padded to leave room for a parallel retail operation.
Technical Partnership
We advise on specifications, we don’t sell over your head. Our technical guidance is there to help you win and deliver the job.
Confidential Pricing
Your pricing stays between us and you. We never publish retail prices that could undermine your quotation to the end customer.
Who we supply
Built for the Trade
If you fit, fabricate, install or develop, you are who we manufacture for. We do not need to understand your customer — that is your business.
Glaziers
Cut-to-size units, fast turnaround and trade counter collection from High Wycombe. Independent and company glaziers alike.
Fabricators
Volume sealed units to spec for window and door manufacturers — warm edge and Low-E as standard with optional argon, jumbo capacity available.
Contractors
Building and glazing contractors get scheduled deliveries and part-deliveries to keep sites moving.
Developers
Residential and commercial developers get consistent specification, reliable lead times and trade pricing across whole projects.
Trade accounts
What a Trade Account Gives You
Direct manufacturer pricing
No middleman markup. Prices based on glass type, spec and volume — with preferential rates for regular customers.
30-day credit terms
Approved accounts receive 30-day payment terms with clear monthly statements — protect your cash flow.
A dedicated contact
A named point of contact who knows your account, your typical specs and your delivery preferences.
Fast quotes
Most quotes returned within 2 hours. Use the online quote form or call the team directly — no account needed to price.
Technical support
Spec advice on U-values, acoustics and safety glass for every order, direct from the works.
Reliable delivery
Own vehicles across London and the Home Counties, specialist pallet courier nationwide, or free collection from the works.
Open a Trade Account
Trade supply only. Get an instant price online — no account needed to quote — or talk to the team about credit terms.