Support
Frequently Asked
Questions
Quick answers to the most common questions about setup, maintenance, filters, and safety.
Setup & Assembly
How long does it take to set up an inflatable paint booth?
A typical Sewinfla booth inflates and is ready to paint in under 5 minutes. The blower is the only powered component — unfold the booth, connect the inflation tube, plug in the blower, and the booth self-inflates. No tools, no frame assembly.
Do I need a dedicated power circuit?
Most Sewinfla blowers run on standard 110V–120V household outlets (US). Larger models with dual blowers may need two separate circuits. Check the blower specifications on the product page for your model. Always use a grounded GFCI outlet in wet or outdoor environments.
Can I set it up outdoors?
Yes — Sewinfla booths are designed for indoor and outdoor use. The 210D/420D Oxford fabric is UV-stabilized and water-resistant. For outdoor use, avoid wind speeds above 15 mph and secure the booth with the included ground stakes. The larger classes have lower limits in their operation labels — 15 km/h (9 mph) on the 7–10 m booth and no outdoor use in any wind for the 11–12 m booth. The larger classes have lower limits in their operation labels — 15 km/h (9 mph) on the 7–10 m booth and no outdoor use in any wind for the 11–12 m booth. Do not operate in rain or snow without overhead cover.
What surface can I set it up on?
Flat, level ground is ideal — concrete, asphalt, packed gravel, or grass all work. Avoid sharp objects, broken glass, or rough surfaces that could puncture the floor. We recommend laying a tarp underneath for added protection on rough surfaces.
Filtration & Ventilation
How often should I replace the filters?
The fiberglass pre-filter should be replaced every 3–5 full spray jobs or when visibly loaded. The activated carbon filter lasts 8–12 spray sessions (for typical solvent-based automotive paints). If you smell solvent odors at the exhaust, it's time to replace the carbon filter.
Does the booth come with filters?
Yes — every Sewinfla booth ships with one set of filters installed: a fiberglass pre-filter and an activated carbon exhaust filter. Replacement filter packs are available in our shop.
Does the filtration meet industrial standards?
Yes. The dual-stage filtration system (fiberglass pre-filter + activated carbon) meets industrial standards for professional spray environments. It adsorbs VOC solvents including toluene, xylene, acetone, and isocyanates.
Do I need additional ventilation?
The integrated blower system provides continuous positive-pressure ventilation, exchanging the full air volume every 2–4 minutes. For enclosed indoor use (garage with the door closed), we recommend an additional exhaust fan venting to the outside. Always spray in a well-ventilated area.
Materials & Durability
What material is the booth made of?
Sewinfla booths use 210D or 420D Oxford weave fabric with a reinforced PVC coating, depending on the model. All seams are double-stitched with heavy-duty thread. The fabric is tear-resistant, UV-stabilized, and engineered for daily professional use.
How long will a Sewinfla booth last?
With proper care, a Sewinfla booth lasts 3–5+ years of regular professional use. The blower motor is rated for 3,000+ hours of continuous duty. Fabric life depends on UV exposure, frequency of use, and cleaning — wipe down overspray after each session to extend fabric life.
Can I repair a puncture or tear?
Yes — every Sewinfla booth includes a repair kit with PVC patches and adhesive. Small punctures can be patched in minutes without affecting performance. For larger damage, contact our support team.
Shipping & Warranty
Where do you ship from?
US orders ship from our California warehouse (La Verne, CA 91750). We also have warehouses in the UK and Australia for international customers. Most US orders arrive in 3–7 business days.
Where are Sewinfla paint booths manufactured?
Sewinfla booths are designed and engineered in the United States — product design, airflow engineering, fabric specification, and quality-control standards are all developed by our team at our La Verne, California headquarters. Manufacturing and assembly take place on our production lines in China and Vietnam, under US-developed specifications and per-batch quality control. Finished inventory is stocked at our California warehouse, plus warehouses in the UK and Australia.
What is your return policy?
We offer a 30-day return window for unused booths in original packaging. Opened or used booths may be subject to a restocking fee. See our Shipping & Returns Policy for full details.
What warranty do you offer?
All Sewinfla booths include a 12-month warranty covering manufacturing defects in materials and workmanship. The blower motor is covered for 12 months. Filters and other consumables are not covered under warranty. See our Terms of Service for complete warranty details.
Do you ship internationally?
Yes — we ship to over 30 countries worldwide. International customers can order through our eBay store or contact us directly. Duties and import taxes are the buyer's responsibility.
Which Written Rules Sit Behind These Answers
Three published rules answer most of the questions above. Booth airflow has to average at least 100 linear ft/min across the cross-section during spraying, booth filters have to be demonstrated to capture 98% of paint overspray, and respirators are the fallback for when engineering controls are not feasible — not the primary control.
- “Do I need additional ventilation?” — OSHA 1910.107(b)(5)(i). The requirement is an average air velocity of not less than 100 linear ft/min over the open face of the booth, or across the booth cross-section during spraying (60 for electrostatic), proved by a visible gauge, audible alarm or pressure-activated device. Our own sizing baseline is 60 air changes per hour for general finishing and 90–120 for solvent-heavy base and clear — see the CFM calculator guide.
- “Does the filtration meet industrial standards?” — 40 CFR § 63.11173(e)(2)(i). Filters must be “demonstrated to achieve at least 98 percent capture of paint overspray”, by a procedure “consistent with the ANSI/ASHRAE Standard 52.2-2017”. That is a test result, which is why we quote MERV values and not the phrase “high efficiency”.
- “How often should I replace the filters?” — OSHA 1910.107(b)(5)(ii). Discarded filter pads and rolls must be “immediately removed to a safe, well-detached location or placed in a water-filled metal container and disposed of at the close of the day's operation”. The service interval is ours (80–120 spray hours for carbon, 30–60 days for the pre-filter); the removal-on-the-day rule is not.
- “What protection do I need while spraying?” — OSHA 1910.134. The standard's “primary objective shall be to prevent atmospheric contamination” by accepted engineering controls — enclosure and ventilation first — with respirators used only “when effective engineering controls are not feasible”. Assigned protection factors are 10 for a filtering half mask, 50 for a full facepiece and 25 for a loose-fitting PAPR; medical evaluation precedes fit testing, and fit testing repeats at least annually.
- “Can I run a booth as a hobby, or do I need the commercial setup?” — 40 CFR § 63.11169(d)(3). An individual who “spray applies surface coating to more than two motor vehicles or pieces of mobile equipment per year is subject to the requirements…regardless of whether compensation is received”. Hobby or business is decided by volume, not by payment.
- “How long will a booth last?” and “can I repair it?” — ASTM D751, ASTM D5034, ASTM D2261. Coated-fabric breaking strength, tear and seam strength are the measurable part of durability; a repair patch restores the local panel, and the coating-to-fabric adhesion test is what tells you whether a patch will hold.
- Where an answer is policy rather than regulation, we say so. Shipping origin, warranty length, the 14-day trial and the wind limits on outdoor use are Sewinfla or label statements, not citations. The binding wording is on the returns and shipping pages, and the operating limits for each booth class are on the size-by-size guide.
Sources checked 2026-09-26: OSHA 29 CFR 1910.107 (airflow, filter disposal) and 29 CFR 1910.134 (engineering controls, APFs, fit testing); Cornell LII 40 CFR § 63.11173 (98% capture, 52.2-2017 test procedure) and § 63.11169 (two-vehicles-per-year threshold); ASHRAE standards library; ASTM D751, D5034, D2261.
Hitting a specific problem — fog, heat, wind, rain, zippers, static, power loss, sizing? See every owner complaint and the engineering that answers it.