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A padded seat. An adjustable-height frame.
These 64-series stools combine a vinyl-padded sitting insert with a steel frame and screw-secured telescoping leg inserts. Choose backless H or HB with a padded backrest, and a coordinated grey or black finish.
DOCUMENTATION YOU CAN CHECK
Explore NPS warranty coverage, independent test results, emissions documentation and safe-use guidance before you choose.
10-year warrantyManufacturer defect coverage. Terms and exclusions apply.Read warranty terms ↗
Upholstery test documentationTB117-2013 cover and filling samples reported conforming; see full scope.Read component report ↗
Low-emissions coverage6400 padded stools are included in the low-emitting seating bracket. Certificate expires August 2027.View MAS certificate ↗
Safe setup & useNever adjust while seated. Follow the unoccupied, upside-down H/HB procedure in the assembly instructions.Read assembly instructions ↗
Upholstery results apply to the stated prototype cover and filling samples, not finished-stool fireproof certification. MAS bracket includes 6400 padded stools (August 2026–August 2027), not individual testing of every SKU. Full PDFs open in a new tab.

Manufacturer-listed lead time: 1–2 days
Not a delivery guarantee. Availability, dispatch and freight timing are confirmed with your quote.

An 11.5-inch vinyl-padded insert sits within a 14-inch steel seat pan. The manufacturer lists 0.5-inch padding and a 4.75 mm MDF core.

With the stool unoccupied and upside down, remove the screws, align all four leg inserts at the same height, then reinstall and tighten the fasteners. Follow the complete assembly instructions.

Four chromed telescoping inserts support the height adjustment. Inspect the glides and fasteners before use.

HB models add an upholstered backrest with 2 inches of vertical and 2 inches of fore-and-aft adjustment. H models are backless.

The 18-gauge frame uses 7/8-inch outside-diameter steel tubing. The welded foot ring is 5/8 inch in outside diameter. Do not stand on the foot ring.

Choose grey vinyl with a grey frame, or black vinyl with a black frame. Both have chromed adjustable inserts.
With the stool unoccupied, turn it upside down. Remove the screws, align all four leg inserts at the same height, and reinstall and tighten the fasteners as described in the complete assembly instructions. Never adjust this screw-secured stool while seated.
Choose a height range, backrest option and coordinated color to see the selected configuration.
| Seat-height ranges | Choose the leg-height configuration in the selector. Set all four inserts to matching positions according to the assembly instructions. |
|---|---|
| Adjustment | Four chromed telescoping inserts; manufacturer lists nine positions. Height is secured by screws, not a gas lift. |
| Seat | 14-inch steel pan; 11.5-inch padded vinyl insert; 0.5-inch padding as listed by manufacturer; 4.75 mm MDF core. |
| Frame and foot ring | 18-gauge frame tubing, 7/8-inch outside diameter; welded foot ring, 5/8-inch outside diameter. |
| Backrest | HB only: upholstered backrest, adjustable 2 inches vertically and 2 inches fore and aft. H models are backless. |
| Color | Grey vinyl and grey frame, or black vinyl and black frame; chromed inserts on both. |
| Safe use | Follow the complete assembly and safe-use instructions. Do not stand on the stool or foot ring. |
| Lead time | Manufacturer-listed 1–2 days; not a dispatch or delivery guarantee. |
| Warranty | 10-year limited manufacturer warranty for the original user, subject to its terms and exclusions. |
Request packing and freight details for your selected configuration and quantity. Use indoors on a stable, flat, dry surface. Clean with mild soap and water and dry thoroughly. Inspect fasteners, glides and welds; stop using the stool if damaged or unstable.
Upholstery test results apply to the stated prototype cover and filling samples, not finished-stool open-flame certification. The MAS low-emitting seating bracket includes 6400 padded stools. Read the complete documents for their scope and conditions.
With the stool unoccupied and upside down, remove the screws, align all four inserts equally, then reinstall and tighten the fasteners according to the full assembly instructions. The manufacturer lists nine positions; the increment is not specified here.
Measure the finished work surface, underside clearance and available user space. Consider knee room and foot support when choosing the leg-height configuration. Set all four inserts equally using the complete assembly instructions.
H is backless. HB adds an upholstered backrest that adjusts vertically and fore and aft. Both have bolt-secured adjustable leg inserts.
Grey vinyl is paired with a grey frame; black vinyl is paired with a black frame. Both have chromed inserts. The upholstery and frame are coordinated choices.
Use the stool indoors on a stable, flat, dry surface. Do not stand on the seat or foot ring. Inspect glides, welds and fasteners regularly, and stop use if the stool is damaged or unstable.
Your inquiry quantity counts configured stools, not cartons. Request packing and freight details for your selected configuration and quantity.
TB117-2013 results cover stated prototype Foam-BF and 64V PVC cover samples, not finished-stool open-flame certification. The MAS low-emitting seating bracket includes 6400, with a representative exemplar, not individual tests of every SKU.
No. It is the listed manufacturer lead time, not a delivery guarantee. Availability, dispatch and freight require confirmation.
Read the complete assembly and care instructions before use. Component-test results apply only to the samples and conditions identified in the report.
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