Duplex Stack Switch · Surface Mount · Weatherproof Box · Infratech 14-4320
What this product is for
This is a surface-mount duplex stack switch assembly used to control compatible Infratech dual-element radiant heaters in outdoor or exposed locations. It includes a weatherproof box and cover arrangement to help protect the switch assembly where flush mounting is not practical.
Use for
Use for Infratech dual-element CD-Series and WD-Series heaters where you need simple manual on/off control of each element independently. This setup is commonly used to provide effective half-power or full-power operation depending on how many elements are switched on.
Avoid for
Avoid using this as a dimmer or variable heat control, and avoid specifying it for single-element heater applications unless the heater/control arrangement specifically calls for a duplex switch. Do not use it beyond the published voltage and amperage limits, and have final compatibility confirmed by a licensed electrician.
Best for
Best for patios, restaurant terraces, covered outdoor amenity spaces, and other installations where a surface-mounted weather-resistant control is preferred over a flush installation. It suits projects that need straightforward switching without moving to a more complex custom control package.
Installed in
Typically installed in residential and light commercial outdoor heating projects, including wall-mounted control points near patios, pergolas, and covered exterior seating areas. Surface mounting can simplify retrofit work where wall depth or finish conditions make recessed boxes less practical.
Why this product exists
It gives installers a manufacturer-matched switching option for dual-element Infratech heaters while adding a weatherproof enclosure for exposed locations. Independent element switching gives users a practical way to reduce output when full heat is not required.
Compared with similar products
Compared with a single on/off switch, this duplex stack switch controls each element separately, which is useful on dual-element heaters. Compared with flush-mount versions, this surface-mount model is easier to apply where opening finished walls is undesirable. Compared with dimming or smart control systems, it is a simpler manual control option with fewer components.
Typical guidance only: independent element switching is commonly used as a simple step-control method for comfort adjustment, but actual heat output and user comfort depend on heater model, mounting height, wind exposure, and layout.
Specifications
- Manufacturer part number: 14-4320
- Brand: Infratech
- Product type: Duplex stack switch assembly
- Mounting: Surface mount
- Enclosure: Weatherproof box
- Application: Dual-element radiant heater control
- Compatible heater series: Infratech CD-Series and WD-Series dual-element heaters
- Voltage rating: 120/277 VAC
- Current rating: 20A maximum per switch
- Control function: Independent switching of each element for effective half-power/full-power operation
- Approximate size: 5.5 in x 3.75 in x 2.75 in (140 x 95 x 70 mm)
- Approximate weight: 2 lb (0.9 kg)
- Materials: Steel J-box, stainless steel cover, plastic switch body
- Country of manufacture: USA
- Warranty: 3-year factory warranty
Actual installation requirements depend on heater model, circuit design, enclosure location, and local electrical code.
Minimum Order $20
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Standard Shipping-Free on orders over $249 in Metropolitan Areas / $499 in Rural Areas
(All Other Accounts)
Standard Shipping-Free on orders over $499
Minimum Order Is $20
Freight Surcharge Apply To Oversized/Over-Weight Items(Not Limited To):
- PVC and EMT Pipe
- Wire and Cable
- Items over 48 inches in length
Surcharges are applied to items on an individual basis regardless if the rest of the order meets prepaid levels. If a freight line appears at the time of check out it only applies to the Items carrying a surcharge and not the entire basket of goods.
Shipping Options:
- A courier can deliver to your home, office, or your job site
- Pick up at local depot near you (applies to the following locations)
Edmonton Warehouse 8135 Roper Rd Edmonton, T6E 6S4, AB
Burnaby Warehouse 5608 Goring St Burnaby, V5B 3A3, BC
Orders are typically delivered within two to eleven business days. The transit time begins the first full shipping day after your order leaves our warehouse. Please allow an additional 2-5 days for delivery to remote locations, additional fees may apply.
THE FOLLOWING APPLIES TO STANDARD SHIPPING OPTIONS
- We cannot deliver to P.O. boxes.
- A signature may be required for shipments over $500.
- No weekend delivery.
- Wire & cable, EMT or PVC conduit, tube lamps 4ft or greater, and 10ft ground rods & mast pipes have special conditions.
Standard Shipping cost on orders less than $499
Total shipping cost = "Per Shipment" cost + "Per Item" cost. The "per item" cost is listed in terms of price per pound.
Product Group | Per Shipment* | Per Item |
|---|---|---|
Boxes | $6.99 | $1.49/lb |
Conduit & Raceway | $149.99 | $2.49/lb |
Connectors & Fittings | $5.99 | $1.19/lb |
Data & Structured Home | $5.99 | $1.19/lb |
Distribution Equipment | $5.99 | $1.19/lb |
Emergency Lighting | $6.99 | $1.49/lb |
Heating & Ventilation | $6.99 | $1.49/lb |
Lighting Controls | $5.99 | $1.19/lb |
Lighting Indoor | $6.99 | $1.49/lb |
Lighting Outdoor | $6.99 | $1.49/lb |
Tools | $4.99 | $.99/lb |
Wire & Cable | $49.99 | $2.29/lb |
Wiring Devices | $5.99 | $1.19/lb |
Any combination of the above items | Highest applicable per-shipment charge | As above |
Effective Date: August, 15, 1998
At Evolt Electrical Supply, customer satisfaction is our top priority. Please review our return policy below:
Returns
Defective Items:
- If you receive a defective item, you may return it for a replacement or refund within 30 days of purchase.
- To initiate a return, please contact our customer service team with your order number and a description of the defect.
Non-Defective Items:
- We do not accept returns for non-defective items. All sales are final once the product is shipped or ordered from the manufacturer. In certain circumstances we may amend this so feel free to contact our customer service team.
Return Process
Authorization:
- Before returning any items, you must obtain a Return Merchandise Authorization (RMA) number from our customer service team. Returns without an RMA number will not be accepted.
- Backordered items can not be cancelled if the item is in transit from the manufacturer, contact us to review.
Shipping:
- Customers are responsible for the return shipping costs. We recommend using a trackable shipping service or purchasing shipping insurance.
Condition:
- Returned items must be in their original packaging and condition. Any items returned damaged due to improper packaging or misuse will not be eligible for a refund or replacement.
Refunds
- Once we receive and inspect your returned item, we will notify you of the approval or rejection of your refund.
- Approved refunds will be processed within [7] business days and a credit will automatically be applied to your original method of payment.



