When designing a commercial or public space, the security grille is often left as an afterthought. But because Dynamic Closures offers so many different creative options, that’s not actually a problem. Architects who haven’t worked with us before are often delighted to realize just how well our doors can fit with their vision for a space.

That being said, there’s an ideal way to plan out a side folding security grille. Follow the steps below, and you’ll be able to accurately communicate what you want to our manufacturing team.

This guide has three parts:

Download This Guide as a PDF


Planning Steps

Step 1 – Track Line

Lay out the desired track line. Use straight lines, curves or a combination of both. There is no limit to the overall length of a side folding door.

track line

Creating Curves

We have four types of curves that are always in stock:

curved track in stock

You can also design almost any type of custom curve, and Dynamic can manufacture it in just a few days (faster than any other provider).

Constraints:

  • Radius must be at least 10” or greater.
  • Angle must be at least 90° or greater.

Step 2 – Header Support

The header must support the weight of the side folding door along the entire track line (see “Model Technical Specifications” chart at the bottom of this page for load requirements).

Header Examples

header examples 1

header examples 2

header examples 3

Step 3 – Stacking and Storage

Determine where the side folding door will stack. It can stack at one end (single stack), or the side folding door can split into two and stack at each end (bi-part). Very wide doors can have more than one set of bi-parts – see Step 5 below for more details.

Single stack vs bipart stack

The stacked curtain can remain in the opening or in a storage pocket. Your choice will affect your end post selection.

Note: for number definitions, please refer to the Side Folding Curtain diagram in the Resources section below. You can view a guide to post types here.

Step 4 – Choose End Posts

Single stack configurations require at least 1 locking end post such as Post 1 and 2, or Post 7 (see below).

Bi-parting post have 2 stacks, and DO NOT require a locking end post.

Stack in Opening

stack in opening

Stack in Storage Pocket

Stack in storage pocket

Step 5 – Plan Spacing of Intermediate and Bi-parting Posts

Place an intermediate post at or near the apex of each curve.

Spans between intermediate posts cannot exceed 10 feet on full height doors or 6 feet for counter doors. Place intermediate posts at required intervals.

For large doors, one bi-part is added for every 30 feet of curtain. If possible, replace an intermediate for a bi-part.

intermediate post spacing

Free Specifications Verification

We provide a free review of your plans and specifications to help ensure best results.

Contact our customer support experts – they can also help guide you to door models that may work best for your needs and aesthetic.

Call 1-800-663-4599 Monday to Friday, 8AM – 5PM Eastern.

Contact Us Online

Side Folding Sample Layouts

Bi-Part / Pocket Both Sides

A straightforward layout that uses two pockets to hide the stack once the curtain has been opened.

Bi part door pocket both sides

Single Stack Into Pocket

A straightforward layout that uses a single pocket area to hide the stack once the curtain has been opened.

Single stack into pocket

Stack Between Jambs

A simple, no-nonsense layout design ideal for when space is at premium and creating a pocket area is not possible.

stack between jambs

“S” Curve (2-135° curves) with Single Stack into 90° Pocket

S Curve stack 90 degree pocket

Dual Track

An innovative layout for use when minimal pocket depth is available.

dual track

Remote Stack With Caddy

An advanced system that stores the curtain in a remote area removed from the entrance.

remote stack with caddy

Caddy System Detail

Lead Post (2) without trolley assembly swings and engages Wall Channel (1). Travelling Wall Channel with Trolley (1a) transports Lead Post (2) back to pocket.

Special Radius Curve

An advanced layout for store and office designs that requires a more rounded solution.

special radius curve

Planning Resources

Here are some tools and specs that will help in your planning.

Guide to Post Types

This guide includes use cases and diagrams.

View the guide >

Calculators

Track Dimensions

track dimensions

Dropbolt and Dropbolt Socket Dimensions

dropbolt socket dimensions

In-Stock Curve Details

Outstanding layout designs and thoughtful details are easily achieved with four stock curves.

curve details 1

 

Radius Curve Curve Length
10 in. 90° 16 in.
120° 10-1/2 in.
135° 7-15/16 in.
150° 5-1/4 in.
14 in. 90° 22 in.
22 in. 90° 34-1/2 in.

We can also custom bend our track to match any curved opening in just days (not weeks). Please contact support for full details at 1-800-663-4599 Monday to Friday, 8AM – 5PM Eastern.

More Side Folding Door Product Options

Read all about the options for every side folding door we carry. These pages include colour options, specs and a photo gallery.

Side Folding Curtain Diagram

side folding curtain diagram

  • A = Hook Bolt
  • B =Keyed Cylinder Lock
  • C = Lead Locking Post
  • D = Full Height Wall Channel
  • E = Track
  • F = Trolleys
  • G = Intermediate Post
  • H = Top and Bottom Locking Post
  • I = Shoot Bolt Knob
  • J = Drop Bolt Knob
  • K = Header Stop
  • L = Standard Non Adjustable Hanger.
    • Top of Curtain to Bottom of Track……..1 1/2 in.
  • M = Minimum Clear Pocket Width
    • Slim Line…………………….5 in.
    • Standard…………………….8 in.
    • Wide Body…………………13 in.
  • N = Bottom of Curtain to:
    • FFL……………………….1 1/4 in.
    • Counter …………………..3/4 in.
  • O = Drop Bolt
  • P = Drop Bolt Socket

Technical Specifications Chart for All Models

Model Series Material Hinge Type Pocket Width Load Req. Stack Ratio
SL 12 CS, SL 525 CS Slim Line Poly/Alum 1 Piece Cont. 5 in. 1.80 lbs per ft² 10%
SL AG CS, SL AG PC, SL AG PS Slim Line Poly/Alum 1 Piece Cont. 5 in. 2.00 lbs per ft² 10%
SL 154 GRILLE Slim Line Aluminum Rod/Link 5 in. 1.00 lbs per ft² 10%
SL OPAQUE Slim Line Aluminum 1 Piece Cont. 5 in. 2.20 lbs per ft² 10%
SL PARAVENT Slim Line Perf Alum 1 Piece Cont. 5 in. 1.80 lbs per ft² 10%
SL PRESTIGE Slim Line Polycarbonate 1 Piece Cont. 5 in. 1.60 lbs per ft² 10%
EZ 12 CS, EZ 525 CS EZ Poly/Alum 1 Piece Cont. 5 in. 1.80 lbs per ft² 10%
EZ AG CS, EZ AG PC, EZ AG PS EZ Poly/Alum 1 Piece Cont. 5 in. 2.00 lbs per ft² 10%
EZ 154 GRILLE EZ Poly/Alum Rod/Link 5 in. 1.00 lbs per ft² 10%
EZ OPAQUE EZ Aluminum 1 Piece Cont. 5 in. 2.20 lbs per ft² 10%
EZ PARAVENT EZ Perf Alum 1 Piece Cont. 5 in. 1.80 lbs per ft² 10%
EZ PRESTIGE EZ Ploycarbonate 1 Piece Cont. 5 in. 1.60 lbs per ft² 10%
FUTURA Elite Tempered Lite 2 Piece Cont. 8 in. 3.20 lbs per ft² 10%
OPAQUE Elite Aluminum 2 Piece Cont. 8 in. 2.80 lbs per ft² 10%
PARAVENT Elite Steel Perf 2 Piece Cont. 8 in. 2.80 lbs per ft² 10%
PRESTIGE Elite Polycarbonate 2 Piece Cont. 8 in. 2.50 lbs per ft² 10%
S126 B, S 126 S Elite Aluminum Rod/Link 8 in. 1.00 lbs per ft² 10%
WB FUTURA Wide Body Tempered Lite 2 Piece Cont. 13 in. 2.70 lbs per ft² 7.5%
WB OPAQUE Wide Body Aluminum 2 Piece Cont. 13 in. 2.80 lbs per ft² 7.5%
WB PARAVENT Wide Body Steel Perf 2 Piece Cont. 13 in. 2.20 lbs per ft² 7.5%
WB PRESTIGE Wide Body Polycarbonate 2 Piece Cont. 13 in. 2.10 lbs per ft² 7.5%
SWB B, SWB S Wide Body Aluminum 2 Piece Cont. 13 in. 1.90 lbs per ft² 7.5%