Jabsco 35770 Series Flexmount Blower, 4 in, 250 CFM, Continuous Duty

Overview

The Jabsco 35770 Series is a continuous duty 4 in Flexmount blower for moving air through engine room and bilge ventilation ducting on boats. The series is rated at 250 CFM, equal to 7.0 m³/min, and is offered in 12 VDC and 24 VDC versions so it can match the vessel’s DC system without changing the basic blower format.

This blower is built for installations where ventilation may need to run longer than a short pre-start purge cycle. The 35770 Flexmount layout lets the blower rotate in its mounting bracket, which helps shorten duct runs and route the discharge toward the vent without forcing awkward bends in confined engine spaces.

The housing uses reinforced thermoset plastic, with corrosion-resistant materials throughout. The Flexmount models weigh 7 lb, or 3.18 kg, and connect to 4 in ducting, making the range a practical fit for engine compartments, fuel vapor ventilation paths, and general air extraction where the installation must stay within marine ventilation requirements.

Key features

• 250 CFM airflow rating for engine room, bilge, compartment, and general air extraction use.
• Continuous duty blower with an extended life motor rated for 5,000 hours.
• Flexmount bracket lets the blower rotate in the mount, helping keep duct runs shorter in tight spaces.
• 4 in duct connection supports common marine ventilation hose layouts.
• Reinforced thermoset plastic housing with corrosion-resistant materials throughout.
• Mounts to a flat bulkhead surface in the upper part of the compartment, away from spray, deck wash, and bilge water.
• N.M.M.A. type accepted and compliant with USCG 183.410 and ISO 8846 for marine ignition protection.
• Complies with ISO 9097 MARINE and conforms with EN 60945, EN 61000-6-1, and EN 61000-6-3.

Variants

The Jabsco 35770 Series is available in two voltage configurations for different DC electrical systems.

Both variants share the 4 in Flexmount format, 250 CFM airflow rating, 7 lb weight, and 4 in duct connection. The voltage, current draw, and recommended fuse size change by model.

• 35770-0092: Voltage 12 VDC. This version draws 11 amps and uses a recommended 15 amp fuse, making it the match for 12 VDC onboard systems.
• 35770-0094: Voltage 24 VDC. This version draws 6 amps and uses a recommended 10 amp fuse, making it the match for 24 VDC onboard systems.

Installation and wiring

For Flexmount installation, place the blower on a flat bulkhead surface in the highest part of the compartment, clear of spray and deck wash. Route the inlet ducting with as few bends as possible toward the lower third of the bilge compartment, where fuel vapors can collect, while keeping the ducting above any point where it could be submerged in bilge water.

Keep the blower away from heat above 130 °F to avoid distortion of the wheel or housing. For wiring runs up to 25 ft from the power source, use marine grade copper wire: 12 gauge for the 12 VDC model and 14 gauge for the 24 VDC model. Longer runs need larger wire, and the circuit must be protected with the proper fuse for the selected variant.

Use on board

This blower suits boats that need steady ventilation in an engine space, fuel compartment, galley, head, or other enclosed area where a 4 in ducted blower is the right fit. It is a strong match for refits where the installer needs a continuous duty blower and the ability to rotate the outlet to work around stringers, bulkheads, and existing duct paths.

Before engine start on gasoline-powered boats, the blower should be run long enough to clear vapors and the compartment should be checked for fuel vapor buildup. During operation, the blower should be used below cruising speed as part of a properly installed marine ventilation system.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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