Rectorseal SD-SJ100W Slimduct Straight Coupling 3.75 in White

Product Description

The RECTORSEAL SD-SJ100W is a straight inline coupling for the SlimDuct SD100 series duct system, designed to join two 3.75-inch SlimDuct channel sections into a continuous protective enclosure. Molded from UV-stabilized, weather-resistant, fire-resistant PVC, this coupling is rated for exterior exposure from -4 degrees F to 140 degrees F. It protects refrigerant tubing, condensate hose, and low-voltage control wiring from weather, debris, and pests. HVAC technicians install it during mini split and heat pump line set routing where duct runs must be extended without breaking the protective channel.

This coupling is intended for residential and light commercial mini split and heat pump installations where SlimDuct SD100 series duct channel is used to enclose line sets along exterior walls or interior runs. The white finish is matched to SlimDuct white duct channels for a uniform appearance. It is used wherever a clean, in-line extension of the duct run is required between two SD100 duct sections.

Key Features

• Fits 3.75-inch SlimDuct SD100 series duct channel sections
• UV-stabilized PVC construction rated for exterior exposure
• Temperature range: -4 degrees F to 140 degrees F
• Snap-together engagement for secure, aligned connection
• Protects refrigerant tubing, condensate lines, and control wiring
• White finish matches SlimDuct white duct channel for cohesive appearance

Compatibility

Designed for use with RECTORSEAL SlimDuct SD100 series 3.75-inch duct channel sections in mini split and heat pump line set enclosure applications.

Installation Notes

Licensed HVAC technicians typically install this coupling as part of a complete line set enclosure during mini split or heat pump commissioning or service. Power down the mini split system before routing or modifying any line set enclosure. Verify that refrigerant tubing, condensate hose, and control wiring are properly positioned inside the duct channel before engaging the coupling. Secure duct channel runs to the mounting surface per local mechanical code requirements before snapping the coupling into place.

Technical Specifications

• Duct Width: 3.75 inches
• Material: UV-stabilized, weather-resistant, fire-resistant PVC
• Temperature Rating: -4 degrees F to 140 degrees F
• Color: White
• Series: SD100
• Connection Type: Snap-together inline coupling
• Application: Exterior and interior line set enclosure

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: SD-SJ100W