Attributes

Brand	-
Category	Basic Building Materials / Floor Springs
Origin	-
Brand	GMT
Model Series	220B/818/222/1400/2400/300/1233
Application	Framed and Frameless Glass Doors
Max Door Weight	100 kg (220 lbs)
Material	Stainless Steel and Aluminum Alloy
Finish	Brushed Silver
Adjustable Closing Speed	Yes, 2-Stage Adjustment
Backcheck Function	Included on select models
Installation Type	Concealed Floor Mount
Warranty	2 Years Manufacturer Warranty

6 reviews

Anonymous

Mar 23, 2026

Rating: 5/5

Great value for commercial use

We replaced three old springs with these GMT models. They are quiet, durable, and look professional under the glass.

Anonymous

Mar 20, 2026

Rating: 5/5

Smooth operation

No slamming, no sticking. The hydraulic mechanism is top-notch. Highly recommend for frameless setups.

Anonymous

Mar 19, 2026

Rating: 4/5

Good product, tricky install

The spring itself is excellent quality. Just make sure you have the right template for drilling the floor cavity. Works great now.

Anonymous

Mar 09, 2026

Rating: 4/5

Solid build quality

Very sturdy construction. Installation required precise drilling, but once set, it works flawlessly. Deducted one star only because the manual could be clearer.

Anonymous

Mar 05, 2026

Rating: 5/5

Perfect for heavy glass doors

Installed this on our office entrance. The 100kg capacity handles our thick glass door effortlessly. Closing speed is smooth and adjustable.

Anonymous

Mar 01, 2026

Rating: 5/5

Exceeded expectations

Bought this for a boutique store door. It adds a premium feel to the entryway. Very satisfied with the purchase.

5 FAQ

Q: What is the minimum floor depth required for installation?

A: Typically, a floor cavity depth of at least 75mm to 80mm is required to house the main body of the floor spring comfortably. Please consult the technical drawing for your specific model variant.

Q: Can I adjust the closing speed myself after installation?

A: Absolutely. There are adjustment valves accessible via the top cover that allow you to fine-tune the closing and latching speeds without removing the unit.

Q: Is this compatible with a 12mm thick frameless glass door?

A: Yes, the GMT Floor Spring series is designed to work with both framed and frameless glass doors ranging from 10mm to 12mm thickness, provided the weight does not exceed 100kg.

Q: Does this model include a hold-open function?

A: Most models in this series (like the 220B) do not have a mechanical hold-open feature; they are designed for automatic closing. Please check the specific sub-model number if hold-open is critical for your project.

Q: Is maintenance required for these springs?

A: These units are sealed and generally maintenance-free. However, we recommend checking the alignment and cleaning the surrounding area annually to ensure optimal performance.

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