Filing Cabinet Capacity Guide: How Much a Drawer Actually Holds, Letter vs Legal, for GTA Offices (2026)

Most filing mistakes are capacity mistakes. A cabinet arrives, the files go in sideways, the drawer will not close, and someone concludes they need another cabinet — when they really needed the right width in the first place. This guide does the simple math that prevents that: what letter and legal files actually measure, how much a drawer holds, and how many drawers a typical GTA office really needs. At Ufficio Furniture, we stock used lateral and vertical cabinets from Global, Teknion, Herman Miller, and others, and we do this calculation with buyers every week.

The cover photo shows a black Teknion 4-drawer lateral cabinet, 36 inches wide, from our own stock (facebook-ads/cabinet-photos/26-teknion-4-drawer-filing-cabinet-36x18x54/img0.jpg) — the size this guide uses as its worked example.

Letter vs Legal: The Two Numbers That Decide Everything

Letter-size paper is 8.5 x 11 inches; legal is 8.5 x 14 inches. That three-inch difference in length is the whole game. A lateral drawer files documents front-to-back across its width, so a 36-inch lateral drawer swallows letter files easily and takes legal files in the same orientation. A 30-inch lateral drawer is tighter for legal. Vertical cabinets are sold by depth instead — a legal-depth vertical drawer is longer front-to-back to fit that 14-inch sheet.

Mixing is possible with hanging rails and folders in the right size, but a drawer planned for one size and filled with the other always wastes space or crushes folders. Count your split honestly: most general offices are 90 percent letter; law, real estate, and accounting offices carry far more legal.

How Much One Drawer Actually Holds

A useful rule of thumb: one inch of drawer length holds roughly 100–150 sheets in hanging folders, depending on folder thickness. A 36-inch lateral drawer therefore holds on the order of 3,500–5,000 sheets per drawer in real-world filing — call it two standard archive boxes per drawer. Our 4-drawer 36-inch Teknion example holds roughly eight archive boxes of working files in total, in about 4.5 square feet of floor.

That math cuts both ways. Offices routinely over-buy: five half-empty cabinets where two full ones would do, in a smaller footprint, at lower cost. Measure your current filing in linear inches — pull the drawers, measure the occupied length — before you shop.

Prices in CAD and What Drives Them

Used filing cabinets at Ufficio Furniture run about $60–$250 CAD depending on drawers, width, brand, and condition — a clean 4-drawer lateral like the cover photo sits in the middle of that range, while 2-drawer units and verticals start lower. Working locks with keys, smooth full-extension drawers, and included hanging rails are worth paying for; a missing key or a drawer that sticks is worth negotiating over. See current stock on our used filing cabinets page.

A Quick Sizing Checklist Before You Buy

Measure your files (linear inches, letter vs legal split). Choose lateral for shared team filing and counter-height surfaces, vertical for tight footprints beside a desk. Confirm every drawer opens fully where the cabinet will stand. Test the lock and take the key count in writing. And leave one drawer's worth of growth room — filing expands to fill what exists, but a cabinet with zero slack becomes a problem the first busy quarter.

Visit Ufficio Furniture, 1215 Meyerside Drive Unit 7, Mississauga ON — open Mon-Sat 10am-7pm / Sun 11am-6pm — bring one of your actual folders and test it in the drawers. Browse Ufficio Furniture for the full range, and call 647-898-8918 for filing cabinet inquiries.