Miller 903665a Roof Jack 35 Inches to 63 Inches 4/12 Pitch Replacement Intertherm 1414.2090

Product Description

The Miller 903665A is a roof jack designed for use with mobile home and manufactured housing HVAC systems. This roof jack covers a height range of 35 inches to 63 inches and is built for installations on roofs with a 4/12 pitch. It serves as a direct replacement for Intertherm part number 1414.2090, making it a reliable choice for technicians servicing Intertherm, Nordyne, and Miller branded heating and cooling equipment in manufactured homes.

Roof jacks are a critical component in mobile home HVAC systems. They provide the passage point for the furnace flue or vent pipe to exit through the roof while maintaining a weathertight seal. A properly fitted roof jack prevents water intrusion, supports the flue pipe, and helps maintain correct draft for combustion appliances. The adjustable height range of 35 inches to 63 inches allows this unit to accommodate varying roof structures and attic depths, giving installers flexibility on the job.

The 4/12 pitch rating means this jack is engineered for roofs that rise 4 inches for every 12 inches of horizontal run. This is a common roof slope found on many manufactured homes, so this part sees wide application across residential HVAC service calls. HVAC technicians working on mobile home furnace replacements or repairs will find this a straightforward drop-in replacement for worn or damaged roof jacks. Selecting the correct pitch-rated roof jack is essential for proper sealing and long-term weather resistance.

• Adjustable height range from 35 inches to 63 inches for flexible installation
• Engineered for 4/12 pitch roofs common in manufactured and mobile homes
• Direct replacement for Intertherm 1414.2090

Product Highlights

The Miller 903665A roof jack offers an adjustable fit across a wide height range and is purpose-built for 4/12 pitch manufactured home roofs, serving as a proven replacement for Intertherm 1414.2090 in residential HVAC service applications.

Product Information

Standard Information

• Brand: MILLER
• Manufacturer Part Number: 903665A

Technical Specifications

• Height Range: 35 inches to 63 inches
• Roof Pitch: 4/12
• Replaces Intertherm Part: 1414.2090
• Application: Manufactured and mobile home HVAC systems