Complete Guide to Gas Strut Sizes and Dimensions

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Selecting the right gas struts size is the key to smooth lifting, controlled motion, and long-term durability. Whether you’re designing cabinets, truck tool boxes, camper shells, or industrial equipment, choosing the correct size ensures safety, stability, and performance.

In this guide, we’ll break down everything you need to know about gas strut sizes, dimensions, and how to read a size chart correctly.

Gas Struts by Size Specifications

The specifications of gas struts are typically determined by four core dimensions: rod and tube diameter, extended length, stroke and force (Newtons).Standard sizes are often categorized by the rod-to-tube ratio, such as 6-15, 8-18, 10-23, and 14-28.

Series	Stroke Range	Force Range (N)	Application
6-15 Series	60 – 200mm	50 – 400 N	Light cabinet doors
8-18 Series	60 – 300mm	100 – 650 N	Car hoods, office chairs
10-22 Series	60 – 400mm	150 – 1200 N	SUV tailgates, truck covers
14-28 Series	60 – 500mm	200 – 2500 N	Heavy industrial lids

Why Gas Struts by Size Matter

Not all gas struts are created equal. Even small differences in length or force can dramatically affect how your application performs.Choosing the wrong size can result in:

Doors that won’t stay open
Excessive closing force
Misalignment or premature wear
Safety risks

That’s why understanding gas strut sizes is more than just measuring length — it’s about matching stroke, force, and mounting geometry.

Gas Strut Dimensions Selection Guidelines

When evaluating gas strut dimensions, there are three primary measurements to consider:

Extended Length: The total length of the gas strut when fully extended, measured from center to center of mounting points.
Stroke Length: The distance the rod travels from closed to fully extended.
Rod and Tube Diameter: Common combinations include 6/15, 8/18, 10/22, and 14/28 mm. Larger diameters typically provide higher force capacity and durability.
Force (N): Force is measured in Newtons (N). A basic conversion for estimation is 1kg = 10N. For a 10lb door, a strut between 50N and 100N is typically required.

Gas Strut Size Chart for Quick Reference

The GASTAC gas strut size chart offers a clear and organized overview of rod and tube diameters, extended length, stroke, and force ranges. Designed for engineers, distributors, and OEM buyers, it simplifies model selection, speeds up replacement matching, and reduces sizing errors, ensuring precise fit and reliable performance in every application.

6-15 Gas Struts Size Chart

GASTAC Code	Stroke Length (mm)	Extended Length (mm)	Compressed Length C (mm)	Rod/Body Diameter (mm)	Force Range F1 (N)
GTS61515550	40	155	115	6/15	50-400
GTS61519550	60	225	165	6/15	50-400
GTS61523550	80	235	155	6/15	50-400
GTS61525550	80	255	175	6/15	50-400
GTS61527550	100	275	175	6/15	50-400
GTS61531550	120	315	195	6/15	50-400
GTS61533050	125	330	205	6/15	50-400
GTS61537550	150	375	225	6/15	50-400
GTS61539050	160	390	230	6/15	50-400
GTS61543050	175	430	255	6/15	50-400
GTS61550550	210	505	295	6/15	50-400

8-18 Gas Struts Size Chart

GASTAC Code	Stroke Length (mm)	Extended Length (mm)	Compressed Length C (mm)	Rod/Body Diameter (mm)	Force Range F1 (N)
GTS818310650	120	310	190	8/18	100-650
GTS818390650	160	390	230	8/18	100-650
GTS818410650	170	410	240	8/18	100-650
GTS818510650	215	510	295	8/18	100-650
GTS818525650	225	525	300	8/18	100-650
GTS818585650	255	585	330	8/18	100-650
GTS818610650	265	610	345	8/18	100-650
GTS818630650	280	630	350	8/18	100-650
GTS818710650	315	710	395	8/18	100-650

10-22 Gas Struts Size Chart

GASTAC Code	Stroke Length (mm)	Extended Length (mm)	Compressed Length C (mm)	Rod/Body Diameter (mm)	Force Range F1 (N)
GTS10225851200	255	585	330	10/22	150-1200
GTS10227001200	305	700	395	10/22	150-1200
GTS10228201200	360	820	460	10/22	150-1200
GTS10229001200	400	900	500	10/22	150-1200
GTS102210001200	450	1000	550	10/22	150-1200
GTS102211001200	500	1100	600	10/22	150-1200

10-22 Gas Struts Size Chart

GASTAC Code	Stroke Length (mm)	Extended Length (mm)	Compressed Length C (mm)	Rod/Body Diameter (mm)	Force Range F1 (N)
GTS142811002000	500	1100	600	14/28	100-2000
GTS142812002000	545	1200	655	14/28	100-2000