Arm Trough Extension
Adds 2-3/4" (70 mm) of length to the Rolko HEMI arm-shell system — mounting hardware included.
The Rolko HEMIPU4 Arm Trough Extension adds 2-3/4" (70 mm) of length to the HEMI modular arm-shell system, giving longer arms the extra forearm and hand support they need. It mounts in-line with the existing arm trough for a seamless extension.
Mounting hardware is included, and the extension integrates with the rest of the Rolko HEMI system — the Forearm Support (HEMIPU1), hand rests (HEMIPU2 / HEMIPU5), and anatomic horns (HEMIPU3L / HEMIPU3R) — so you can tailor arm positioning to the user.
HEMIPU4 Arm Trough Extension Features
Adds 70 mm of trough length for longer arms and more support.
Ships with the mounting hardware needed to install it.
Integrates in-line with the Rolko HEMI arm-shell system.
Fine-tune forearm support length and placement for the user.
Extension Piece Specifications
rolko arm trough extension measurement guide
The HEMIPU4 extends the arm trough within the Rolko HEMI Modular Arm Shell System by 2-3/4" (70 mm). It works alongside the HEMIPU1 Forearm Support and the HEMI hand rests to lengthen and fine-tune arm positioning.
Mounting hardware is included. Confirm your existing HEMI arm-shell or trough configuration before ordering to ensure the extension lines up with your setup.
Arm Trough Extension, by Rolko Buyer’s Guide
The Arm Trough Extension by Rolko is a modular, high-comfort wheelchair arm positioning accessory engineered to extend support and improve upper-extremity alignment for individuals needing extra forearm or wrist coverage. Designed to integrate seamless support into Rolko’s modular HEMI armrest system, this extension piece optimizes pressure distribution, post-injury positioning, and overall upper-body stability during extended daily wheelchair use.
Modular HEMI Arm Positioning System
Designed as an integral part of Rolko’s modular HEMI armrest series, this extension piece connects securely between standard forearm supports and hand pads. It allows caregivers and seating specialists to customize arm trough length tailored precisely to the user's upper-limb limb length and clinical posture requirements.
Arm Trough Extension Weight and Build
Constructed with a lightweight yet high-durability internal core, the extension piece maintains rigid structural support without adding unnecessary weight to the wheelchair frame. The molded contour helps keep the arm, wrist, and hand properly centered, preventing slipping or lateral displacement during movement.
Biocompatible Polyurethane (PU) Foam Construction
Crafted from high-grade, skin-safe polyurethane (PU) foam, the extension piece is certified biocompatible according to DIN EN 10993-5 standards. The smooth, self-skinning PU surface provides soft cushioning against sensitive skin, reduces shear force, and is non-porous for effortless cleaning and infection control.
Fire-Retardant Safety Standards
Engineered with safety in mind, the Rolko Arm Trough Extension meets strict European fire-retardant safety compliance (DIN EN 1021-2). This makes it fully suitable for home health setups as well as demanding clinical, rehabilitation, and long-term care environments.
Integrated Connecting Plate and Hardware
Each extension unit comes equipped with an internal connecting plate and pre-installed threaded pins/grub screws. This enables a quick, secure, and flush attachment to compatible Rolko armrest components, ensuring zero play or wobbling once locked into position.
Universal Left or Right Side Compatibility
Featuring a symmetrical profile, the extension piece fits interchangeably on either the left or right side of the wheelchair arm assembly. This universal design simplifies replacement, reconfiguration, and clinical stocking across different user setups.
Enhanced Postural and Contracture Support
Ideal for individuals with hemiplegia, muscle weakness, stroke recovery, or severe contractures, the extension offers extended support for the forearm and hand. By encouraging optimal anatomical alignment, it helps reduce shoulder subluxation strain and mitigates pressure buildup over prominent bony areas.
Arm Trough Extension, by Rolko Review
The Arm Trough Extension by Rolko offers a reliable, medical-grade solution for users who require customized upper-body support and precise forearm positioning. With its biocompatible PU construction, fire-retardant safety ratings, universal L/R compatibility, and seamless integration with the Rolko HEMI system, it delivers exceptional comfort, durability, and clinical utility for daily wheelchair seating.
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ROLKO NORTH AMERICA, INC.
LIMITED WARRANTY AND MEDICAL DEVICE DISCLAIMER
◎ WARRANTY AT A GLANCE ◎
◎ TERMS & COVERAGE ◎
1. Applicability and Scope
Rolko North America, Inc. (“Seller”) warrants to its business customers only (“Buyer”) that the products sold by Seller are free from defects in materials and workmanship under normal use and service. This Limited Warranty applies solely to business to business transactions. Sales to consumers are expressly excluded and are not covered. Seller acts solely as a distributor of medical equipment components and accessories. Seller does not design, manufacture, or determine the clinical suitability of products for any specific medical application unless expressly stated in writing.
2. Warranty Period
This Limited Warranty is valid for a period of six (6) months from the date of delivery to Buyer.
5. Alignment With Manufacturer Warranties
To the extent permitted by law, this Limited Warranty is intended to align with and flow down from the warranty terms provided by Seller’s upstream manufacturers and suppliers, including but not limited to Rolko Germany and MK Battery. Seller does not provide any warranty beyond those expressly stated herein or beyond what is provided by the original manufacturer.
3. Warranty Remedies
If a product is determined by Seller to be defective within the warranty period, Seller shall, at its sole discretion, do one of the following:
- Repair the defective product
- Replace the defective product with the same or a functionally equivalent product
If Seller is unable to repair or replace the product within a reasonable time, Buyer’s sole remaining remedy shall be a refund of the original purchase price paid for the defective product. These remedies constitute Buyer’s sole and exclusive remedies and Seller’s entire liability for any breach of this Limited Warranty.
◎ DISCLAIMERS & REGULATORY ◎
4. Medical Device and Regulatory Disclaimer
Products distributed by Seller may be classified as medical devices or medical device accessories under applicable U.S. and international regulations. Buyer acknowledges and agrees that Seller does not provide medical advice or clinical determinations. Buyer is solely responsible for verifying product compatibility, regulatory compliance, and suitability for Buyer’s intended use, including compliance with FDA, state, and international regulatory requirements. Final product configuration, labeling, and intended use determination rests solely with Buyer or the original equipment manufacturer. Seller makes no warranty that products are fit for any particular medical purpose, treatment, or patient application.
8. Disclaimer of Implied Warranties
EXCEPT AS EXPRESSLY SET FORTH HEREIN, SELLER MAKES NO WARRANTIES, EXPRESS OR IMPLIED. ALL IMPLIED WARRANTIES, INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED TO THE MAXIMUM EXTENT PERMITTED BY LAW.
◎ EXCLUSIONS & JURISDICTION ◎
6. Exclusions and Limitations
This Limited Warranty does not cover defects or damage resulting from misuse, abuse, improper installation, improper storage, alteration, modification, or repair by parties other than Seller or an authorized manufacturer. Normal wear and tear, cosmetic damage, or consumable components are excluded. Accidents, negligence, or failure to follow instructions or specifications are excluded. Indirect, incidental, special, or consequential damages including loss of profits, loss of use, downtime, labor costs, or replacement costs are excluded.
7. Notice of Defects
Buyer must notify Seller in writing of any alleged defect within ten (10) business days after discovery. Failure to provide timely notice voids this Limited Warranty for the claimed defect.
9. Governing Law and Jurisdiction
This Limited Warranty shall be governed by the laws of the State of Iowa, USA. Any dispute arising out of or relating to this Limited Warranty shall be brought exclusively in the state or federal courts located in Iowa.
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