---
product_id: 24449784
title: "Dorma RTS88 Overhead Concealed Door Closer (Body Only)"
brand: "dorma"
price: "$1058"
currency: NZD
in_stock: true
url: https://www.desertcart.nz/products/24449784-dorma-rts88-overhead-concealed-door-closer-body-only
store_origin: NZ
region: New Zealand
---

# Dual valve speed control Fits doors up to 250 lb Cast iron durability Dorma RTS88 Overhead Concealed Door Closer (Body Only)

**Brand:** dorma
**Price:** $1058
**Availability:** ✅ In Stock

## Summary

> 🚪 Elevate your entryway with the ultimate concealed door closer—where strength meets subtlety.

## Quick Answers

- **What is this?** Dorma RTS88 Overhead Concealed Door Closer (Body Only) by dorma
- **How much does it cost?** $1058 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/24449784-dorma-rts88-overhead-concealed-door-closer-body-only)

## Best For

- dorma enthusiasts

## Why This Product

- Trusted dorma brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Endure:** Cast iron body with heavy-duty ball bearings ensures long-lasting performance in high-traffic spaces.
- • **Precision Control:** Dual non-critical valves and thermostatic technology maintain smooth, consistent closing speeds regardless of temperature.
- • **Universal Handing:** One closer fits all—single or double-acting doors, eliminating installation guesswork.
- • **Safe & Secure Hold:** Mechanical hold-open at 90° with backcheck cushioning protects doors and users from abrupt swings.
- • **Compact & Versatile Fit:** Seamlessly integrates into headers as slim as 1-3/4", perfect for sleek, modern doorways.

## Overview

The Dorma RTS88 Overhead Concealed Door Closer is a robust, cast-iron door closer designed for commercial and high-traffic environments. It fits compact headers, supports doors up to 250 lbs, and features dual adjustable valves with thermostatic control for consistent, smooth operation. Its universal handing and mechanical hold-open at 90° make it a versatile, durable solution that protects doors and enhances building safety.

## Description

Compact closer body is designed to fit into headers as small as 1-3/4" 4". Closer body is non-handed. One closer for both single-acting or double-acting doors. Accommodates maximum door weight of 250 lb (interior) or 200 lb (exterior), including all hardware. A pressure relief valve protects closer from damage caused by forced closing. An integral cushion limits door swing to 90. An auxiliary stop must always be installed in conjunction with RTS88. A mechanical backcheck slows down the door prior to contact with the cushion. Closing speeds are controlled by two non-critical adjustment valves. Sweep area is from 105 to 20. Latch area is from 20 to 0. Thermostatic valves insure constant closing speeds under varying temperatures. Single point mechanical hold open is at 90. The RTS88 offers a cast-iron body along with heavy-duty ball bearings at the spindle. Steel cam and roller assembly is coupled to dual steel pistons.

## Features

- Dorma
- Keyless Access > Other Door Hardware","Keyless Access > Shop Keyless > Other Door Hardware","Keyless Access > Other Door Hardware > Door Closers
- Dorma Dorma RTS88-90-HO-4 Hold Open 90° Overhead Concealed Door...
- RTS88-90-HO-4

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Dorma |
| Color | Silver |
| Exterior Finish | Cast Iron |
| Installation Type | Screw-In |
| Material | Cast Iron |
| Recommended Uses For Product | commercial buildings, high-traffic areas |

## Product Details

- **Material:** Cast Iron
- **Brand:** KABA
- **Color:** Silver
- **Exterior Finish:** Cast Iron
- **Installation Type:** Screw-In

## Images

![Dorma RTS88 Overhead Concealed Door Closer (Body Only) - Image 1](https://m.media-amazon.com/images/I/31L0X3hxnTL.jpg)

## Frequently Bought Together

- Dorma RTS88 Overhead Concealed Door Closer (Body Only)
- Norton 7500 Series Institutional Door Closer, Tri-Style (Regular, top jamb, or Parallel arm), Non-Handed, Cast Aluminum (689)
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**Shop now:** [https://www.desertcart.nz/products/24449784-dorma-rts88-overhead-concealed-door-closer-body-only](https://www.desertcart.nz/products/24449784-dorma-rts88-overhead-concealed-door-closer-body-only)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-08*