---
title: "90 degree corner block"
url: https://formtechsys.com/90CornerBlock/
description: "90 degree corner block specification record: part number EPSCR4 with dimensions, coverage and size family."
published: 2026-08-17
updated: 2026-08-17
---

# 90 degree corner block

Published 2026-08-17

[Formtech](https://formtechsys.com/) › [Product reference](https://formtechsys.com/Products/) › 90 degree corner block

EPSCR4

Component record for the 90 degree corner block in the Formtech expanded polystyrene building system.

## Description

This expanded polystyrene concrete form contains four self-locking 4-inch polypropylene cavity webs (WEB04R) and one 6-inch web (WEB06R) inserted diagonally at the corner for increased strength. Cavity webs have built-in rebar clips to hold the rebar in position. The interlocking, reversible pattern on the top and bottom allow the block to be placed either right or left-facing to create a running bond pattern. Embedded polypropylene furring strips, eight inches on center, allow easy attachment of interior and exterior finishes.

## Parameters

*Dimensional parameters*

| Field | Value |
|---|---|
| Part No. | EPSCR4 |
| Length | 16" short leg, 32" long leg |
| Width | 9" (2.5" each panel and 4" concrete) |
| Height | 16" |
| Surface area | 5.33 sq.ft (outside corner) |

## Size family

- 90 degree corner block, 4 inch
- 90 degree corner block, 6 inch
- 90 degree corner block, 8 inch

Furring strips are embedded eight inches on center; interior and exterior finishes attach directly to them with non-corrosive, self-tapping screws.