Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
JOHNS MANVILLE Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 1 in Thick, 4 1/2 in ID - Mineral Wool Elbow Insulation
JOHNS MANVILLEMineral Wool Elbow Insulation

JOHNS MANVILLE Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 1 in Thick, 4 1/2 in ID

The Johns Manville 90° Elbow Pipe Fitting Insulation (MPN 40745) is a mineral wool, unslit, tan elbow insulation with a 4.5 in ID, 1 in thickness, and an R-Value of 4.4. It is plenum rated, making it suitable for use…

SKU 3G-OTH-708744

Brand
JOHNS MANVILLE
Item
Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 1 in Thick, 4 1/2 in ID
Category
Mineral Wool Elbow Insulation
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

JOHNS MANVILLE
Manufacturer Part Number
40745
Type
Mineral Wool, Unslit, Tan
ID
4 1/2 in
Thick
1 in
R-Value
4.4
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

JOHNS MANVILLE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Johns Manville 90° Elbow Pipe Fitting Insulation (MPN 40745) is a mineral wool, unslit, tan elbow insulation with a 4.5 in ID, 1 in thickness, and an R-Value of 4.4. It is plenum rated, making it suitable for use in air-handling spaces.

Frequently Asked Questions

What is Johns Manville 90° Elbow Pipe Fitting Insulation used for?

This mineral wool elbow insulation is used to insulate 90-degree pipe fittings in HVAC and industrial piping systems. Its plenum-rated design makes it suitable for air-handling spaces where fire safety and thermal efficiency are required.

What are the specifications of Johns Manville 40745 pipe fitting insulation?

The Johns Manville 40745 is a 90° elbow insulation made of mineral wool, unslit, with a tan finish. It has a 4 1/2 in ID, 1 in thickness, and an R-Value of 4.4. It is plenum rated for use in air-handling spaces.

Where to buy Johns Manville 40745 pipe fitting insulation worldwide?

3G Electric supplies and delivers Johns Manville 40745 pipe fitting insulation worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to ensure your order reaches any international destination.

How to install Johns Manville mineral wool elbow insulation?

Installation typically involves fitting the unslit elbow over the pipe fitting and securing it with appropriate adhesive or mechanical fasteners. Ensure the insulation is snug against the fitting and all joints are sealed to prevent thermal bridging and moisture ingress.

Used in

Common applications for JOHNS MANVILLE
Commercial HVAC — Johns Manville duct wrap (FSK-faced fiberglass) used to insulate supply and return air ducts in office buildings.
Industrial process piping — Johns Manville Thermo-12 Gold calcium silicate insulation applied on high-temperature steam lines in power plants.
Refrigeration systems — Johns Manville fiberglass pipe insulation with vapor retarder used on chilled water lines to prevent condensation.
Manufacturing facilities — Johns Manville duct wrap installed on ventilation ducts in factories to maintain temperature control and reduce energy loss.
Data centers — Johns Manville insulation used on HVAC ductwork to manage cooling efficiency and humidity in server rooms.
Hospitality buildings — Johns Manville duct wrap applied in hotel HVAC systems for thermal comfort and noise reduction.

JOHNS MANVILLE Products

3G Electric supplies JOHNS MANVILLE mineral wool elbow insulation. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from JOHNS MANVILLE

View all JOHNS MANVILLE parts →
Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 1 in Thick, 2 in ID, Tan, Unfaced Facing (MPN 592095). Key specifications — attr936907: Plenum Rated.
JOHNS MANVILLE
Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 1 in Thick, 2 in ID, Tan, Unfaced Facing (MPN 592095). Key specifications — attr936907: Plenum Rated.
Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 1 1/2 in Thick, 3 1/2 in ID, Tan (MPN 40755). Key specifications — attr936907: Plenum Rated.
JOHNS MANVILLE
Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 1 1/2 in Thick, 3 1/2 in ID, Tan (MPN 40755). Key specifications — attr936907: Plenum Rated.
Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 2 in Thick, 5 1/2 in ID, Tan, 8.7 R-Value (MPN 592085). Key specifications — attr936907: Plenum Rated.
JOHNS MANVILLE
Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 2 in Thick, 5 1/2 in ID, Tan, 8.7 R-Value (MPN 592085). Key specifications — attr936907: Plenum Rated.
Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 1 in Thick, 1 3/8 in ID, Tan, 4.4 R-Value (MPN 592098). Key specifications — attr936907: Plenum Rated.
JOHNS MANVILLE
Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 1 in Thick, 1 3/8 in ID, Tan, 4.4 R-Value (MPN 592098). Key specifications — attr936907: Plenum Rated.
Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 1 in Thick, 3 in ID, Tan, Unfaced Facing (MPN 560302). Key specifications — attr936907: Plenum Rated.
JOHNS MANVILLE
Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 1 in Thick, 3 in ID, Tan, Unfaced Facing (MPN 560302). Key specifications — attr936907: Plenum Rated.
Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 2 in Thick, 4 1/2 in ID, Tan, 8.7 R-Value (MPN 566727). Key specifications — attr936907: Plenum Rated.
JOHNS MANVILLE
Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 2 in Thick, 4 1/2 in ID, Tan, 8.7 R-Value (MPN 566727). Key specifications — attr936907: Plenum Rated.
Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 1 1/2 in Thick, 3 in ID, Tan, 6.5 R-Value (MPN 592110). Key specifications — attr936907: Plenum Rated.
JOHNS MANVILLE
Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 1 1/2 in Thick, 3 in ID, Tan, 6.5 R-Value (MPN 592110). Key specifications — attr936907: Plenum Rated.
Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 2 in Thick, 2 1/2 in ID, Tan, 8.7 R-Value (MPN 525675). Key specifications — attr936907: Plenum Rated.
JOHNS MANVILLE
Pipe Fitting Insulation: 90° Elbow, Mineral Wool, Unslit, 2 in Thick, 2 1/2 in ID, Tan, 8.7 R-Value (MPN 525675). Key specifications — attr936907: Plenum Rated.