MEXDA WS-PC07A-T, one of the three 7-meter acrylic swim spa models in the MEXDA range.

MEXDA is the swim spa brand of Foshan Gaoming Yuehua Sanitary Ware Co., Ltd., a manufacturer founded in Foshan, Guangdong in 1995 that builds swim spas, hot tubs, sauna rooms and steam rooms, exports around 85% of its output, and serves markets including the USA, the EU, Australia, Germany and France. In MEXDA product data, the shell material is recorded as acrylic across the swim spa range, and the 7-meter category contains three models: WS-PC07A-T, WS-PC07A and WS-S07B.

For a buyer in the research or evaluation stage, two parameters decide whether a 7-meter swim spa works on a project: how the acrylic shell is specified, and what the published dimensions actually measure. Neither question has a universal answer. Acrylic shell thickness is a design decision that depends on shell geometry, the reinforcement system, and the jet and pump loads. A headline figure such as 7-meter can describe the shell, the water envelope, or the finished unit with skirt panels fitted. The practical rule is straightforward: take thickness and dimension values from the model-specific data sheet and dimensioned drawing, confirm them in writing, and treat any generic figure found on a web page as unverified.

This guide explains why acrylic is used for swim spa shells, what buyers should examine regarding dimensions in the 7-meter category, and how structural integrity, insulation and surface finish interact with both.

Problem Definition: Why These Two Parameters Are So Hard to Verify

Shell thickness and overall dimensions are the specifications a swim spa buyer is least likely to find stated clearly, and the two that are most expensive to get wrong.

• Material is stated, gauge usually is not. Manufacturer data sheets commonly record the material family, such as acrylic, as a line item, while the sheet thickness used in a specific shell remains an engineering document. MEXDA product records follow this pattern: material is listed as acrylic for every swim spa model, while the configuration lines describe control system, pumps, jets, filtration and insulation rather than a thickness number.
• Dimension definitions are not standardised. A 7-meter unit may be quoted by shell length, by shell length plus skirt, or by the footprint including the equipment cabinet. Site fit depends on the finished footprint; swim feel depends on the usable water length.
• Data sheets differ between models in the same size class. Among MEXDA 7-meter models, the WS-S07B data sheet explicitly lists a PS skirt, while the WS-PC07A and WS-PC07A-T sheets do not list skirt panels. Two quotations for a 7-meter swim spa may therefore cover two different scopes of supply.
• Errors surface at the least convenient moment. A mismatch between the purchased unit and site access, deck opening or in-ground pit is discovered during delivery, not during quotation.

Industry Background: Where the 7-Meter Category Sits

The swim spa category is growing and geographically concentrated. The global swim spa market was valued at approximately USD 2.5 billion in 2024, according to Future Market Report and Emergen Research, and the Swim Spa Market Research Report 2034 projects it to reach USD 5.2 billion by 2034 at a compound annual growth rate of 7.5% to 8.5%. Growth estimates vary by source: Global Market Insights and Future Market Insights publish different CAGR ranges for overlapping periods, which is why buyers should treat any single growth figure as one estimate rather than a settled fact.

Regional demand is uneven. North America holds the largest share at 38.2% of the global market, valued at USD 1.99 billion in 2025, followed by Europe at 28.5%. The Asia-Pacific region, led by China and Australia, represents approximately 20% of the global pool and spa market according to Market Research Future. On the demand side, dual-zone hybrid swim spas with separate temperature control for the swim area and the spa area are identified by Future Market Report as the fastest-growing segment, a trend that pushes more buyers toward longer shells with clearly divided zones and therefore toward careful dimensional planning.

Regulatory context matters most in Europe. Safety requirements for whirlpool baths and spas in the EU are governed by the EN IEC 60335-2-60:2023 standard, as published by CENELEC and referenced by BSI Knowledge. Buyers specifying for European projects should ask suppliers to document how the specific model addresses that standard. North American requirements differ, and the applicable documentation should be confirmed for the model and jurisdiction rather than assumed.

The 7-meter class sits between compact family swim spas and the 8-meter, 10-meter and 12-meter shells used in larger commercial installations. It is long enough to support a usable swim lane in a residential backyard, hotel spa facility or resort leisure centre, while remaining shippable and installable where a 10-meter or 12-meter shell would not fit. MEXDA application data for its swim spas lists hotels, fitness centres, leisure facilities, residential communities and resorts as target environments, with outdoor use, UV exposure and wide temperature ranges as typical working conditions.

Why Acrylic Is Used as the Swim Spa Shell Material

Acrylic is a thermoformable sheet material, and that single property explains most of its presence in swim spa construction. A flat acrylic sheet can be heated and formed over a mould into a one-piece shell with compound curves: a contoured swim-lane floor, integrated seating, a step profile and a smooth transition into the equipment area. A one-piece formed shell reduces the number of joints in the water envelope, and joints are where leaks and structural movement begin.

Three further characteristics matter to buyers:

• Surface behaviour. Acrylic presents a smooth, non-porous surface. It does not readily absorb water, resists the sanitising chemicals used in spa water, and is easy to wipe down. For hotel and resort operators running continuous filtration cycles, surface cleanability affects both operating cost and guest perception.
• Weathering and appearance. Swim spas in the MEXDA range are specified for outdoor use in open-air environments with UV exposure and a wide temperature range, where anti-UV performance, low-noise operation, corrosion-resistant components and weatherproof design are listed requirements. Acrylic is selected partly because colour and gloss can be controlled at the sheet stage: MEXDA data for the WS-115E III records Chinese White Acrylic as the standard colour, which shows that surface colour is a specified line item rather than an incidental result.
• Repairability. Localised damage to an acrylic surface can often be sanded and polished back, which matters in commercial settings where a chip or scratch would otherwise require panel replacement.

Acrylic also has limits that buyers should weigh. On its own it does not provide the rigidity required by a 7-meter shell, which spans a long distance and carries substantial water mass plus repeated jet loads. Structural performance comes from the combination of the acrylic sheet, the reinforcement layer bonded to it, and the supporting frame or base. Acrylic can also be scratched by abrasive cleaning tools and can be damaged by incorrect chemical dosing. Buyers who understand both the benefits and the boundaries ask about the complete shell system rather than the surface material alone.

Dimension Points to Examine in the 7-Meter Category

MEXDA WS-PC07A: a 7-meter acrylic shell configured with four 2.2 kW water pumps, 57 jets and six water columns.

Rather than a numeric range, buyers should work from a defined list of measurements and confirm each one against a dimensioned drawing. For a 7-meter swim spa, the following points determine whether the unit fits, performs and can be serviced.

1. Shell length versus usable water length. The nominal classification of 7 meters refers to the shell. The usable swim length is reduced by the step, the equipment bay and any internal seating. Ask for both values.
2. Finished footprint including skirt and cabinet. Whether skirt panels are included changes the footprint. Confirm which 7-meter model includes a skirt: in MEXDA data, the WS-S07B lists a PS skirt as a line item, while the WS-PC07A and WS-PC07A-T sheets do not list one.
3. Width, depth and zone layout. Width determines whether a single swim lane or a divided dual-zone layout is realistic. Depth affects entry, hydrotherapy seating and the volume of water the heating and filtration system must manage.
4. Entry, step and rail configuration. MEXDA 7-meter models differ here: the WS-PC07A-T lists a stainless steel rail, while the WS-PC07A and WS-S07B sheets do not list a rail. Entry hardware should be fixed at quotation stage.
5. Equipment bay access. Pumps, filter, heater and control system need service access. For in-ground installations, the pit must preserve that access.
6. Delivery route. Gate widths, turning radii and crane or lift positions should be compared against the finished footprint before the order, not after it.
7. Deck and support interface. Above-ground, deck-set and in-ground installations load the shell differently. The support interface should be specified together with the dimensions.

Structural Integrity, Insulation and Surface Finish

MEXDA WS-S07B: a 7-meter acrylic shell listed with a PS skirt, two 3 kW heaters, a waterfall and 48 jets.

Structural integrity across a 7-meter shell

Structural demand scales with length and with jet load. MEXDA's three 7-meter models carry different jet counts, namely 62 jets on the WS-PC07A-T, 57 on the WS-PC07A and 48 on the WS-S07B, and different pump configurations, which means the reinforcement and support system is not automatically identical across the class. Buyers evaluating structural integrity should ask:

• Is the shell formed as a single piece, and how is the reinforcement layer bonded to the acrylic?
• How is the shell supported along its full length, particularly at the swim lane and the equipment bay?
• How is the shell levelled, and what tolerances apply at the support interface?
• Which pump and jet configuration is being quoted, since that configuration sets the dynamic load?

Insulation and operating mode

Insulation is where specification differences inside the same size class become visible. MEXDA data sheets list PU insulation as a line item on several models, including the WS-CP2400, WS-CP2200, WS-SP2200, WS-SP2800, WS-SP3500, WS-CP3200 and WS-EP3812T Plus. On the three 7-meter models, the current data sheets do not list PU insulation, so insulation configuration should be confirmed in writing for the specific model, installation type and local climate.

MEXDA swim spas operate in a temperature self-regulation and automatic filtration cycle mode, supported by equipment such as a filtration system, heating unit, circulation pump, LED lighting and control panel. For buyers, that operating logic is the reason insulation matters commercially: a shell that holds temperature reduces heater run time in continuous-use settings such as hotels, resorts and fitness facilities, where the water is expected to remain at a usable temperature throughout the day.

Surface finish and colour

Surface finish should be assessed against three practical criteria: uniformity of the formed surface, cleanliness of the swim-lane and seating contours, and the specified colour and gloss. Because MEXDA records material as acrylic across the range and records colour separately where it is fixed, such as Chinese White Acrylic on the WS-115E III, buyers can request colour and finish confirmation as part of the technical review rather than leaving it to production discretion. Operators should also receive cleaning guidance, since abrasive tools and incorrect chemical dosing are common causes of avoidable surface damage.

Step-by-Step: How to Verify Acrylic and Dimensions Before Ordering

1. Define the installation type and site constraints. Confirm whether the project is in-ground, above-ground or deck-set, and measure the delivery route.
2. Request the model-specific data sheet. MEXDA publishes per-model configuration covering material, control system, pumps, filtration, jets, lighting and insulation. Use it as the baseline for comparison.
3. Request a dimensioned drawing. Confirm which measurements are shell, water envelope, skirt and cabinet.
4. Confirm shell construction in writing. Ask how the acrylic shell is reinforced and supported across the 7-meter span, and how the specific pump and jet configuration is accounted for.
5. Confirm insulation configuration for the chosen model, installation type and climate.
6. Confirm electrical and equipment specification. Power requirements differ across the range: the WS-PC07A-T lists a 2.8 kW swim training system at 380V, for example, while the WS-PC07A and WS-S07B sheets do not list a swim training system and instead carry multiple 2.2 kW water pumps.
7. Confirm commercial terms. MEXDA operates on OEM/ODM production with a minimum order quantity of 1 set, a monthly capacity of 500 sets, a lead time of 30-40 days, 100% testing and remote after-sales guidance.

Use Cases: Where a 7-Meter Acrylic Swim Spa Fits

Residential backyard installation

A 7-meter shell suits a backyard where a full lap pool is impractical. The WS-S07B configuration, which lists a PS skirt, two 3 kW heaters, a waterfall, two speakers and 48 jets, is oriented toward family leisure and hydrotherapy rather than pure training. For outdoor residential use, anti-UV performance, low noise operation and weatherproof design are listed requirements in MEXDA application data.

Hotel, resort and commercial leisure

Hospitality projects prioritise continuous, temperature-stable operation. The temperature self-regulation and automatic filtration cycle mode is the relevant operating logic, and the WS-PC07A-T configuration, with a 2.8 kW 380V swim training system, 62 jets and a stainless steel rail, is the more training-oriented option in the 7-meter class. A construction contractor in France has purchased 20 MEXDA swim spa units for residential and commercial leisure and fitness applications, reporting reliable performance and constant temperature over a relationship lasting more than 10 years.

Fitness-oriented and counter-current swimming

Where the primary purpose is swimming against a current, the deciding factors are the swim training system, the number of water pumps and the usable water length. The WS-PC07A lists four 2.2 kW water pumps, 57 jets and six water columns without a separately listed swim training system, while the WS-PC07A-T pairs one 2.2 kW water pump with a dedicated 2.8 kW swim training system. These produce materially different swimming experiences, and the choice should follow the intended user rather than the price alone. A third-party product overview additionally describes MEXDA swim spas as integrating intelligent thermostatic systems, endless pool functions and ozone sterilisation cycles.

In-ground and private wellness projects

In-ground installation requires a pit that preserves access to pumps, filter, heater and control system, plus a support interface that matches the shell. Because the current data sheets for the 7-meter models do not list PU insulation, in-ground projects in cooler climates should confirm insulation and drainage details with the supplier before excavation begins.

MEXDA 7-Meter Swim Spa Models: Parameter Comparison

All values are taken from MEXDA product data for the respective 7-meter models. Not listed means the item does not appear on the current data sheet for that model and should be confirmed in quotation.

Frequently Asked Questions

Conclusion

Acrylic thickness and dimensions are engineering decisions, not marketing claims. Acrylic is used for swim spa shells because it can be thermoformed into a one-piece, smooth and repairable surface, but the material alone does not carry the load of a 7-meter span. Structural integrity comes from the shell system as a whole, insulation configuration determines how the unit behaves in continuous-use environments, and dimensions must be confirmed against a drawing rather than inferred from a size label.

For the 7-meter category, MEXDA offers three acrylic models with clearly different configurations: the WS-PC07A-T for training-oriented installations, the WS-PC07A for multi-pump, high-jet output, and the WS-S07B for leisure and hydrotherapy with a PS skirt, dual heaters and a waterfall. All three share the same applicable industries, namely hotels, fitness facilities, leisure venues, residential communities and resorts.

The next step is documentation, not negotiation: request the data sheet, the dimensioned drawing and the written confirmation of insulation, skirt and electrical configuration for the specific model.